Twitch recently cleared out a lot of bots from its platform, and xQc in particular got dinged pretty hard. Here's how many followers he lost.
The Real Reason xQc Just Lost 2 Million Followers
Bots have become such a nuisance that, every once in a while, websites will do a sweep to try and bounce these virtual phonies from their respective clubs. Twitch just did this recently, and managed to clear out over 7.5 million accounts it deemed were "follow-botting and view-botting."