Userscript: Disney+ PiP

  // ==UserScript==
// @name         Disney+ PiP
// @namespace    pauljones.io
// @version      0.1
// @description  Enable PiP on Disney+ videos.
// @author       Paul Jones
// @match        https://www.disneyplus.com/*
// @grant        none
// ==/UserScript==

"use strict";

(function () {
  const targetNode = document.getElementById("app_index");
  const observer = new MutationObserver((mutationsList, observer) => {
    mutationsList.forEach((item) => {
      if (item.type === "attributes" && item.attributeName === "autoplay") {
        item.target.disablePictureInPicture = false;
      }
    });
  });
  observer.observe(targetNode, {
    attributes: true,
    childList: true,
    subtree: true,
  });
})();

Install it from the gist on Github (opens in new tab).