Enables the hidden playback speed option in YouTube Music
// ==UserScript==
// @name Enable hidden playback speed option in YT Music
// @namespace http://tampermonkey.net/
// @version 0.1
// @description Enables the hidden playback speed option in YouTube Music
// @author oRevived (Damian)
// @match https://music.youtube.com/*
// @grant none
// @license MIT
// ==/UserScript==
// Selects the element with the "playback-rate style-scope ytmusic-player-bar" class.
var element = document.querySelector('.playback-rate.style-scope.ytmusic-player-bar');
// If the element exists, remove the "hidden" attribute so it is visible (it should appear at the bottom right, next to the volume button).
if (element) {
element.removeAttribute('hidden');
}