Greasy Fork is available in English.
禁用写入剪贴板功能，防治牛皮藓。
// ==UserScript==
// @name Block Clipboard Writing
// @name:zh-CN 禁止写入剪贴板
// @description Disable clipboard writing function to prevent moss.
// @description:zh-CN 禁用写入剪贴板功能，防治牛皮藓。
// @namespace http://greasyfork.icu/users/197529
// @version 0.0.1
// @author kkocdko
// @license Unlicense
// @match *://*/*
// @run-at document-start
// ==/UserScript==
"use strict";
// Pay attention to the order! Based on compatibility.
document.execCommand = () => {};
navigator.clipboard.writeText = () => {};
navigator.clipboard.write = () => {};