I’m not a fan of either and would advocate everyone not consume large amounts of video content because of how heavy it is from an environmental point of view and move away from corporations from an anticapitalist/freedom point if view.
Let’s not kid ourselves though, as shit as twitch is, it does not come close to having the same grip google has on the internet and our lives.
Peertube is a completely different platform, perhaps you’re mixing it up with YouTube clients like newpipe or invidious?