diff --git a/app/assets/javascripts/discourse/app/components/quote-button.js b/app/assets/javascripts/discourse/app/components/quote-button.js
index 0f739d3298e..a8a4de73de5 100644
--- a/app/assets/javascripts/discourse/app/components/quote-button.js
+++ b/app/assets/javascripts/discourse/app/components/quote-button.js
@@ -173,9 +173,6 @@ export default Component.extend(KeyEnterEscape, {
         selectedRange().startOffset > 0
           ? false
           : _selectedText === toMarkdown(cooked.innerHTML),
-      displayName:
-        this.siteSettings.display_name_on_posts &&
-        !this.siteSettings.prioritize_username_in_ux,
     };
 
     for (
diff --git a/app/assets/javascripts/discourse/app/lib/quote.js b/app/assets/javascripts/discourse/app/lib/quote.js
index 650223acbde..d965833a6ee 100644
--- a/app/assets/javascripts/discourse/app/lib/quote.js
+++ b/app/assets/javascripts/discourse/app/lib/quote.js
@@ -6,12 +6,8 @@ export function buildQuote(post, contents, opts = {}) {
     return "";
   }
 
-  const name = opts.displayName
-    ? opts.name || post.name
-    : opts.username || post.username;
-
   const params = [
-    name,
+    opts.username || post.username,
     `post:${opts.post || post.post_number}`,
     `topic:${opts.topic || post.topic_id}`,
   ];
diff --git a/app/assets/javascripts/discourse/app/lib/transform-post.js b/app/assets/javascripts/discourse/app/lib/transform-post.js
index 14244853de7..37a1e4940f4 100644
--- a/app/assets/javascripts/discourse/app/lib/transform-post.js
+++ b/app/assets/javascripts/discourse/app/lib/transform-post.js
@@ -74,7 +74,6 @@ export function transformBasicPost(post) {
     actionsSummary: null,
     read: post.read,
     replyToUsername: null,
-    replyToName: null,
     replyToAvatarTemplate: null,
     reply_to_post_number: post.reply_to_post_number,
     cooked_hidden: !!post.cooked_hidden,
@@ -228,7 +227,6 @@ export default function transformPost(
   const replyToUser = post.get("reply_to_user");
   if (replyToUser) {
     postAtts.replyToUsername = replyToUser.username;
-    postAtts.replyToName = replyToUser.name;
     postAtts.replyToAvatarTemplate = replyToUser.avatar_template;
   }
 
diff --git a/app/assets/javascripts/discourse/app/models/composer.js b/app/assets/javascripts/discourse/app/models/composer.js
index 259149c11bb..4f9194b414d 100644
--- a/app/assets/javascripts/discourse/app/models/composer.js
+++ b/app/assets/javascripts/discourse/app/models/composer.js
@@ -23,7 +23,6 @@ import deprecated from "discourse-common/lib/deprecated";
 import { isEmpty } from "@ember/utils";
 import { propertyNotEqual } from "discourse/lib/computed";
 import { throwAjaxError } from "discourse/lib/ajax-error";
-import { prioritizeNameInUx } from "discourse/lib/settings";
 
 let _customizations = [];
 export function registerCustomizationCallback(cb) {
@@ -357,10 +356,6 @@ const Composer = RestModel.extend({
 
     if (topic && post) {
       const postNumber = post.post_number;
-      const name =
-        this.siteSettings.display_name_on_posts && prioritizeNameInUx(post.name)
-          ? post.name
-          : post.username;
 
       options.postLink = {
         href: `${topic.url}/${postNumber}`,
@@ -369,7 +364,7 @@ const Composer = RestModel.extend({
 
       options.userLink = {
         href: `${topic.url}/${postNumber}`,
-        anchor: name,
+        anchor: post.username,
       };
     }
 
diff --git a/app/assets/javascripts/discourse/app/widgets/post.js b/app/assets/javascripts/discourse/app/widgets/post.js
index 889e66dd905..ca41e8eabed 100644
--- a/app/assets/javascripts/discourse/app/widgets/post.js
+++ b/app/assets/javascripts/discourse/app/widgets/post.js
@@ -134,21 +134,16 @@ createWidget("reply-to-tab", {
 
   html(attrs, state) {
     const icon = state.loading ? h("div.spinner.small") : iconNode("share");
-    const name =
-      this.siteSettings.display_name_on_posts &&
-      prioritizeNameInUx(attrs.replyToName)
-        ? attrs.replyToName
-        : attrs.replyToUsername;
 
     return [
       icon,
       " ",
       avatarImg("small", {
         template: attrs.replyToAvatarTemplate,
-        username: name,
+        username: attrs.replyToUsername,
       }),
       " ",
-      h("span", formatUsername(name)),
+      h("span", formatUsername(attrs.replyToUsername)),
     ];
   },
 
diff --git a/app/assets/javascripts/discourse/tests/acceptance/composer-actions-test.js b/app/assets/javascripts/discourse/tests/acceptance/composer-actions-test.js
index a289708080f..acc54f4a38e 100644
--- a/app/assets/javascripts/discourse/tests/acceptance/composer-actions-test.js
+++ b/app/assets/javascripts/discourse/tests/acceptance/composer-actions-test.js
@@ -4,7 +4,6 @@ import {
   exists,
   query,
   queryAll,
-  selectText,
   updateCurrentUser,
 } from "discourse/tests/helpers/qunit-helpers";
 import { click, fillIn, visit } from "@ember/test-helpers";
@@ -19,11 +18,7 @@ import { toggleCheckDraftPopup } from "discourse/controllers/composer";
 
 acceptance("Composer Actions", function (needs) {
   needs.user();
-  needs.settings({
-    prioritize_username_in_ux: true,
-    display_name_on_post: false,
-    enable_whispers: true,
-  });
+  needs.settings({ enable_whispers: true });
   needs.site({ can_tag_topics: true });
 
   test("creating new topic and then reply_as_private_message keeps attributes", async function (assert) {
@@ -556,59 +551,3 @@ acceptance("Composer Actions With New Topic Draft", function (needs) {
     sinon.restore();
   });
 });
-
-acceptance("Prioritize Username", function (needs) {
-  needs.user();
-  needs.settings({
-    prioritize_username_in_ux: true,
-    display_name_on_post: false,
-  });
-
-  test("Reply to post use username", async function (assert) {
-    await visit("/t/internationalization-localization/280");
-    await click("article#post_3 button.reply");
-
-    assert.strictEqual(
-      queryAll(".action-title .user-link").text().trim(),
-      "codinghorror"
-    );
-  });
-
-  test("Quotes use username", async function (assert) {
-    await visit("/t/internationalization-localization/280");
-    await selectText("#post_3 p");
-    await click(".insert-quote");
-    assert.strictEqual(
-      queryAll(".d-editor-input").val().trim(),
-      '[quote="codinghorror, post:3, topic:280"]\nYep, all strings are going through a lookup table.*\n[/quote]'
-    );
-  });
-});
-
-acceptance("Prioritize Full Name", function (needs) {
-  needs.user();
-  needs.settings({
-    prioritize_username_in_ux: false,
-    display_name_on_post: true,
-  });
-
-  test("Reply to post use full name", async function (assert) {
-    await visit("/t/internationalization-localization/280");
-    await click("article#post_3 button.reply");
-
-    assert.strictEqual(
-      queryAll(".action-title .user-link").text().trim(),
-      "Jeff Atwood"
-    );
-  });
-
-  test("Quotes use full name", async function (assert) {
-    await visit("/t/internationalization-localization/280");
-    await selectText("#post_3 p");
-    await click(".insert-quote");
-    assert.strictEqual(
-      queryAll(".d-editor-input").val().trim(),
-      '[quote="Jeff Atwood, post:3, topic:280"]\nYep, all strings are going through a lookup table.*\n[/quote]'
-    );
-  });
-});
diff --git a/app/assets/javascripts/discourse/tests/acceptance/topic-quote-button-test.js b/app/assets/javascripts/discourse/tests/acceptance/topic-quote-button-test.js
index c156488a3b3..6c9c7bb9c25 100644
--- a/app/assets/javascripts/discourse/tests/acceptance/topic-quote-button-test.js
+++ b/app/assets/javascripts/discourse/tests/acceptance/topic-quote-button-test.js
@@ -13,11 +13,10 @@ import { test } from "qunit";
 acceptance("Topic - Quote button - logged in", function (needs) {
   needs.user();
   needs.settings({
-    display_name_on_posts: false,
-    prioritize_username_in_ux: true,
     share_quote_visibility: "anonymous",
     share_quote_buttons: "twitter|email",
   });
+
   chromeTest(
     "Does not show the quote share buttons by default",
     async function (assert) {
diff --git a/app/assets/javascripts/discourse/tests/acceptance/topic-test.js b/app/assets/javascripts/discourse/tests/acceptance/topic-test.js
index db7d8e6ed10..da2305ba7d1 100644
--- a/app/assets/javascripts/discourse/tests/acceptance/topic-test.js
+++ b/app/assets/javascripts/discourse/tests/acceptance/topic-test.js
@@ -241,8 +241,6 @@ acceptance("Topic", function (needs) {
 acceptance("Topic featured links", function (needs) {
   needs.user();
   needs.settings({
-    display_name_on_posts: false,
-    prioritize_username_in_ux: true,
     topic_featured_link_enabled: true,
     max_topic_title_length: 80,
     exclude_rel_nofollow_domains: "example.com",
diff --git a/app/serializers/post_serializer.rb b/app/serializers/post_serializer.rb
index bbab210afde..2a2eec117b6 100644
--- a/app/serializers/post_serializer.rb
+++ b/app/serializers/post_serializer.rb
@@ -256,7 +256,6 @@ class PostSerializer < BasicPostSerializer
   def reply_to_user
     {
       username: object.reply_to_user.username,
-      name: object.reply_to_user.name,
       avatar_template: object.reply_to_user.avatar_template
     }
   end