DisableURLPopupOnLinkHover.user.js

// ==UserScript==
// @name         Disable URL Popup On Link Hover (Experimental)
// @namespace    https://greasyfork.org/en/users/85671-jcunews
// @version      1.0.1
// @license      AGPLv3
// @author       jcunews
// @description  Reference: https://www.reddit.com/r/operabrowser/comments/im6r5d/why_when_i_hover_over_anything_does_it_show_the/
// @match        *://*/*
// @grant        none
// @run-at       document-start
// ==/UserScript==

(() => {
  function delHref(e) {
    e.removeAttribute("href");
  }
  function doclick() {
    this.setAttribute("href", this.dataset.orghref);
    setTimeout(delHref, 100, this);
  }
  function patchLink(a, h, s) {
    if (h = a.getAttribute("href")) {
      s = getComputedStyle(a);
      a.style.color = s.color;
      a.style.cursor = s.cursor;
      a.style.textDecoration = s.textDecoration;
      a.dataset.orghref = h;
      a.removeAttribute("href");
      a.addEventListener("click", doclick, true);
    }
  }
  (new MutationObserver(recs => {
    recs.forEach(rec => {
      rec.addedNodes.forEach(node => {
        if (node.nodeType === Node.ELEMENT_NODE) {
          if (node.tagName === "A") patchLink(node);
          node.querySelectorAll("A").forEach(patchLink);
        }
      });
    });
  })).observe(document, {childList: true, subtree: true});
})();