Userscript to hide fabric mods (use with Tampermonkey or any other userscript plugin) Fixed for the newer Curse site update.

hidefabric.js

// ==UserScript==
// @name         Hide Fabric Mods
// @version      1.0
// @description  Hides fabric mods from CurseForge
// @author       Vazkii
// @match        https://www.curseforge.com/minecraft/mc-mods*
// ==/UserScript==

(function() {
    'use strict';

    $('.project-listing-row').each(function(e) {
        if($(this).find('figure[title="Fabric"]').length > 0)
            $(this).hide();
    });
})();