Basically every major social media site uses bots. Reddit was infamous for using bots to first get the site some popularity and attention. We all know how much Youtube likes to mess around with numbers. On Twitch they don't ban accounts that have had bots because they can't verify who is doing it.

It's very easy to tell when something on the internet is organic or not and since 2014 onward it's been getting more and more fake by the day, unless you go to less popular places.