Twitter Bird Back userscript.

twitter-bird-back.user.js

// ==UserScript==
// @name         Twitter Bird Back
// @version      1.4.1
// @description  Make Twitter bird back.
// @author       Lumynous
// @license      MIT
// @require      https://scriptcat.org/lib/513/2.0.0/ElementGetter.js
// @match        https://twitter.com/*
// ==/UserScript==

(function() {
  'use strict';

  // Favicon.
  document.querySelector('link[rel="shortcut icon"]').href = '//abs.twimg.com/favicons/twitter.2.ico';

  // Title.
  setInterval(() => {
    const title = document.title;
    if (title[title.length - 1] === 'X') {
      document.title = title.substring(0, title.length - 1) + 'Twitter';
    }
  }, 1000);

  // Tweet menu.
  elmGetter.each('.r-kemksi.r-1q9bdsx.r-qo02w8.r-j2cz3j.r-1udh08x.r-u8s1d [role="menuitem"]:first-child .r-poiln3.r-bcqeeo.r-qvutc0', (elm) => {
    if (elm.textContent.slice(elm.textContent.length - 4) === 'post') {
      elm.textContent = elm.textContent.substr(0, elm.textContent.length - 4) + 'tweet';
    }
  });

  // Top left logo.
  elmGetter.each('.r-1nao33i.r-4qtqp9.r-yyyyoo.r-16y2uox.r-8kz0gk.r-dnmrzs.r-bnwqim.r-1plcrui.r-lrvibr.r-lrsllp', (elm) => {
    elm.outerHTML = `
      <svg
        class="r-4qtqp9 r-yyyyoo r-16y2uox r-8kz0gk r-dnmrzs r-bnwqim r-1plcrui r-lrvibr r-lrsllp"
        style="color:#1D9BF0;"
        xmlns="http://www.w3.org/2000/svg"
        viewBox="0 0 512 512"
      >
        <!--! Font Awesome Free 6.4.0 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) Copyright 2023 Fonticons, Inc. -->
        <path d="M459.37 151.716c.325 4.548.325 9.097.325 13.645 0 138.72-105.583 298.558-298.558 298.558-59.452 0-114.68-17.219-161.137-47.106 8.447.974 16.568 1.299 25.34 1.299 49.055 0 94.213-16.568 130.274-44.832-46.132-.975-84.792-31.188-98.112-72.772 6.498.974 12.995 1.624 19.818 1.624 9.421 0 18.843-1.3 27.614-3.573-48.081-9.747-84.143-51.98-84.143-102.985v-1.299c13.969 7.797 30.214 12.67 47.431 13.319-28.264-18.843-46.781-51.005-46.781-87.391 0-19.492 5.197-37.36 14.294-52.954 51.655 63.675 129.3 105.258 216.365 109.807-1.624-7.797-2.599-15.918-2.599-24.04 0-57.828 46.782-104.934 104.934-104.934 30.213 0 57.502 12.67 76.67 33.137 23.715-4.548 46.456-13.32 66.599-25.34-7.798 24.366-24.366 44.833-46.132 57.827 21.117-2.273 41.584-8.122 60.426-16.243-14.292 20.791-32.161 39.308-52.628 54.253z"/>
      </svg>
    `;
  });
  // For mobile.
  elmGetter.each('.r-1nao33i.r-4qtqp9.r-yyyyoo.r-16y2uox.r-lwhw9o.r-dnmrzs.r-bnwqim.r-1plcrui.r-lrvibr', (elm) => {
    elm.outerHTML = `
      <svg
        class="r-4qtqp9 r-yyyyoo r-16y2uox r-lwhw9o r-dnmrzs r-bnwqim r-1plcrui r-lrvibr"
        style="color:#1D9BF0;"
        xmlns="http://www.w3.org/2000/svg"
        viewBox="0 0 512 512"
      >
        <!--! Font Awesome Free 6.4.0 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) Copyright 2023 Fonticons, Inc. -->
        <path d="M459.37 151.716c.325 4.548.325 9.097.325 13.645 0 138.72-105.583 298.558-298.558 298.558-59.452 0-114.68-17.219-161.137-47.106 8.447.974 16.568 1.299 25.34 1.299 49.055 0 94.213-16.568 130.274-44.832-46.132-.975-84.792-31.188-98.112-72.772 6.498.974 12.995 1.624 19.818 1.624 9.421 0 18.843-1.3 27.614-3.573-48.081-9.747-84.143-51.98-84.143-102.985v-1.299c13.969 7.797 30.214 12.67 47.431 13.319-28.264-18.843-46.781-51.005-46.781-87.391 0-19.492 5.197-37.36 14.294-52.954 51.655 63.675 129.3 105.258 216.365 109.807-1.624-7.797-2.599-15.918-2.599-24.04 0-57.828 46.782-104.934 104.934-104.934 30.213 0 57.502 12.67 76.67 33.137 23.715-4.548 46.456-13.32 66.599-25.34-7.798 24.366-24.366 44.833-46.132 57.827 21.117-2.273 41.584-8.122 60.426-16.243-14.292 20.791-32.161 39.308-52.628 54.253z"/>
      </svg>
    `;
  });
})();

Todos:

• "Not interested in this tweet" pseudo tweet.
• "Tweet" button
• "Post your reply!" text.
• i18n: It uses simple text replacing on tweet menu now.