A sudden announcement like this from Twitch doesn't well indication for the gambling company. It is believed that Twitch may have banned this gambling sites due to some kind of restrictions by the government or others. Nowadays gambling has become a big industry. But I hope that such restrictions may be reduce in the near future. Besides, all these companies have to take alternative route for gambling promotion.
I think everything depends on the TOS of Twitch, like you mentioned. If they prohibit any form of solicitation whether express or implied, then they can rule that this Twitch streamer violated their TOS. Given the widespread of online gambling among the youth, I do expect that Twitch will soon amend their TOS or implement it more strictly this time.
They have a month to figure out the details. We can only speculate its nature for now. But twitch definitely doesn't want its name to be associated with such dramas, they will come down hard on it. Their reputation amongst big brand(Intel, acer, nvidia, etc) matters more to them, compared to whatever stake or roobet is paying them or slot streams rakes in.
Only stake, duelbits and roobet? But, what about other gambling sites? Because I heard the ban is only selected but gambling streams are still there and will continue. I don't think the gambling sites that I mentioned are illegal but I believe all of them already have their own licenses.
All offshore casinos.
If Twitch wants to keep those gambling streams then it would be fine, but they should also restrict that content to people over 18 or 16 years old, somehow.
Age restriction would never work on a platform with majority of its audience under 18
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.
Those social medias are massive. And you will always get content tailored according to your interest.
I use Twitter and reddit on a daily basis, my feeds are full of wholesome content usually.