Automatically reject cookies on consent dialog.

youtube-reject-cookies.user.js

// ==UserScript==
// @name        YouTube Reject Cookies
// @namespace   https://gist.github.com/luetage/b9a34552a6abf48f992b2effabcbff80
// @updateURL   https://gist.github.com/luetage/b9a34552a6abf48f992b2effabcbff80/raw
// @description Automatically reject cookies on consent dialog.
// @version     2022.9.9
// @author      luetage
// @match       https://www.youtube.com/*
// @run-at      document-start
// ==/UserScript==

(function () {
  "use strict";
  function reject(mutations) {
    mutations.forEach((mutation) => {
      mutation.addedNodes.forEach((node) => {
        if (node.id === "button") {
          const btn = document.querySelector(
            "[aria-label='Reject the use of cookies and other data for the purposes described']"
          );
          if (btn) btn.click();
        }
      });
    });
  }
  window.onload = () => {
    const selfdestruct = new MutationObserver(reject);
    selfdestruct.observe(document.body, { childList: true, subtree: true });
    setTimeout(() => {
      selfdestruct.disconnect();
    }, 7000);
  };
})();