They do get charged for their mistakes. When creators lose money, Twitch loses money too. For copyright infringement, humans aren't much any better (see the Kat

They do get charged for their mistakes. When creators lose money, Twitch loses money too. For copyright infringement, humans aren't much any better (see the Katy Perry/Flame lawsuit). Even if the solution was more human review, it would be unprofitable to allow smaller channels to monetize, and inevitably people would complain about that too.