YT Garbage Collector

// ==UserScript==
// @name         YT Garbage Collector
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://www.youtube.com/feed/trending
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    var BANNED_CHANNELS = {
        'Dawid Frank': 'UCuaCWszD8Z2bZcSNvlAR6UA',
        'Kala': 'UCF77W-qJJAo9VYnwwp0z2dA',
        'Waksy': 'UCrtZVvEXEYWO1J_nOzL3fiw',
        'Planeta Faktów': 'cietyvlog',
        'Beksy': 'UC8hqZRg26L4LGjCftQJzQXg',
        'Lord Kruszwil': 'UC4uocvXN4aPFQG6paBaMb1A'
    }

    var videos = document.getElementsByTagName('ytd-video-renderer');

    for(var i = 0; i < videos.length; i++) {
        var metablock = videos[i].getElementsByTagName('ytd-video-meta-block')[0];

        var channelInfo = metablock.getElementsByClassName('yt-simple-endpoint')[0];

        var channelURI = channelInfo.href;
        var channelName = channelInfo.innerText;

        var bannedChannelsURIs = Object.values(BANNED_CHANNELS);

        var removed = false;
        for(var j = 0; j < bannedChannelsURIs.length; j++) {

            if(channelURI.endsWith(bannedChannelsURIs[j])) {
                videos[i].innerHTML = '';
                removed = true;
            }
        }

        var log = channelURI + ' ' + channelName;
        if(removed) {
            console.warn(log);
        } else {
            console.log(log);
        }
    }
})();