It depends. Do you consider Twitch's moderation to be to extreme? They definitely wouldn't have let this slide. I'm pretty sure they used to stream on twitch and got banned there.

Kick is currently very lax when it comes to moderation (it's their niche, their way of existing even with Twitch's dominance), and I don't think banning channels promoting group punching a dude would be a bad thing to censor.