dont-load.js

// ==UserScript==
// @name         Don't Load Project
// @description  Do not load project when reading comments
// @author       apple502j
// @match        https://scratch.mit.edu/projects/*
// ==/UserScript==

// Credit to Florrie
const destroyGUI = () => {
    const oldMap = Array.prototype.map;
    Array.prototype.map = function(...args) {
        // loader.jsx
        if (this && this[0] && this[0].weight) {
            Array.prototype.map = oldMap;
            throw new Error('loader crashed; you are reading a comment');
        }
        return oldMap.apply(this, args);
    };
};

if (location.hash.startsWith('#comments-')) {
    console.log('we will destroy gui')
    destroyGUI();
}