So I just found out that twitch has updated their gambling-related policies today, which seems like an answer to the Sliker issue since it seems like it blew up.
https://twitter.com/twitch/status/1572347129192132611?s=46&t=iEgymbuwfEHY6LTs9dTS6g
Seems like instead of removing it all, they've limited it to a few ones that are the most famous ones. I'm all in for letting sports betting alone since that's kind of a sports-related watch along sometimes, but I doubt poker being left alone was good.
Basically like youtube. There have been lots of it on youtube as well. Probably the retain ones that are paying them up to 6 figures as stated above which Twitch receives from them. It's a business after all. Eventually, the victims will learn anyway, and some of them will comment more on the video to warn others.
What Twitch can do is tag streamers to add disclaimers to thier video description.