reddit_AIO.js

// ==UserScript==
// @name         reddit_AIO
// @version      0.0
// @description  Hides all posts from a subreddit by name (not case sensitive) or by regex, removes custom subreddit css, and force old reddit.
// @author       khlam
// @match        http://*.reddit.com/*
// @match        https://*.reddit.com/*
// @license     MIT
// @require      https://gist.githubusercontent.com/khlam/f85ee658005a45a99ba0147124c09c38/raw/704f92f52d7c4c1ed8e71f2c9311b46c2e6ea3cc/jQuery.v3.6.0
/* globals jQuery, $ */
// @run-at       document-end
// @grant        none
// ==/UserScript==

const regex = [] // put your regex block here, comma seperated. See example:
// const regex = [/news/, /meme/] // <--- will block /r/worldnews, /r/news, /r/meme, and /r/memes

const blacklisted_subs = [] // put your specific subreddits to never show posts here, comma separated. See example:
// const blacklisted_subs = ["worldnews"] // <--- will block all posts from /r/worldnews, not case sensitive

let blacklisted_subs_lower = blacklisted_subs.map(e => { return e.toLowerCase() }) // all blacklisted subreddits to lowercase

let all_threads = document.querySelectorAll("[data-subreddit]")

all_threads.forEach(thread => {
    let this_sub = thread.getAttribute('data-subreddit').toLowerCase() // post's subreddit to lowercase

    // if subreddit is in blacklist or if subreddit matches regex then hide it
    if ((blacklisted_subs_lower.includes(this_sub) === true) || regex.some(function(r) { return r.test(this_sub)}) === true) { 
        console.log("HIDING", thread)
        //thread.innerHTML = `Content from ${this_sub} hidden.`
        thread.style.display = "none"
    }
})

// force old reddit | by: /u/101743
var url = window.location.host;
if (url.match("old.reddit.com") === null) {
    url = window.location.href;
    if  (url.match("//www.reddit") !== null){
        url = url.replace("//www.reddit", "//old.reddit");
    } else {
    	return;
    }
    //console.log(url);
    window.location.replace(url);
}

// remove subreddit custom css
(function() { 
    'use strict';
    $('link[rel=stylesheet][title="applied_subreddit_stylesheet"]').remove()
})();

// remove signup banner
let signup_banner = document.getElementsByClassName("listingsignupbar infobar")[0]
signup_banner.style.display = "none"

// remove right column premium banner
let premium_banner = document.getElementsByClassName("premium-banner-outer")[0]
premium_banner.style.display = "none"