Twitch has not turned into a cesspool, I think it kinda always was lol. Influencers have always been a big problem for social media, kids are wasting their entire time with them and even adults, especially in crypto, paying way too much attention to them, paying them money and fooling others into thinking they can also become rich by "influencing".
It's not about gambling per se, it's about this mentality of distracting people and making poor choices for role models.
In that case, you must think that Twitter and Instagram are hell on earth because those social media are all about influencing. I have seen some cases in Instagram about people who basically fake being rich or photoshop themselves beyond recognition for the sake of getting followers and clout; Twitter is also the home of all kind of sick people. You probably you have also listened to some cases yourself.
At least, on Twitch one can get entertainment and have fun watching some actually authentic and humble streamers and not only throwing money at girls streaming themselves in a jacuzzi.