Twitch following privacy screen. Install a user script runner like ViolentMonkey, TamperMonkey or GreaseMonkey and Click "Raw" to install.

Twitch following privacy screen.user.js

// ==UserScript==
// @name         Twitch following privacy screen
// @namespace    https://techygrrrl.stream
// @version      0.1
// @description  Mask the following sidebar
// @author       techygrrrl
// @match        https://*.twitch.tv/*
// @match        https://*.twitch.com/*
// @icon         https://techygrrrl.stream/images/icons/twitch-privacy-screen.png
// @grant        none
// ==/UserScript==

(function() {
  'use strict';
  
  let found = false

  // Check and click in milliseconds
  const CHECK_INTERVAL = 200

  setInterval(() => {
    perform()
  }, CHECK_INTERVAL)
  
  function perform() {
    if (found) return
    
    console.log('🕵🏻‍♀️ Looking for sidebar to mask')
        
    const selector = '.side-bar-contents'
    const element = document.querySelector(selector)
    
    if (!element) return

    console.log('🙈 Masking sidebar')
    element.style.filter = 'blur(7px)'
    
    found = true
  }
})();