They’re like the difference between Patreon and OnlyFans. Patreon has stricter rules about what can be posted. So all of the people who needed to post things against Patreon’s rules ended up on OnlyFans. If you’re too extreme for Twitch, you end up on one of those alternative streaming sites. And he was too extreme even for those alt sites.

Rumble started as an alt-right streaming site, after Twitch started banning Nazis for hate speech. They got butthurt that they weren’t allowed to spew hate speech, and started their own streaming site instead.

Kick is a weird one, which basically started by recruiting established streamers. They sniped established streamers from Twitch, with the promise of better pay-per-view. They have a significantly lower user base compared to Twitch, but supposedly pay those streamers more. Aside from that, it has a lot of gambling streams. Lots of Twitch streamers tend to view Kick as a sort of morally grey area, because there is speculation that the entire site is basically a gigantic online gambling ad.

I haven’t heard a lot about Parti, but it seems to be a sort of last-ditch landing ground for people who have been banned from other platforms. Jack Doherty was one of their biggest streamers for a while, after getting banned on Kick for fighting a dude on stream. He got stream-sniped, and in response he basically sic’ed his security team on the stream sniper. They chased him down and beat him in the street, live on stream. Kick banned him, while Parti kept him on. He was banned from Parti not too long ago, though. Not sure why.