Twitch is a big category in the enshittification category. They're endlessly user hostile. I want to force management to use their own products
The money people probably just told them "more ads. I don't care how you do it - more ads"
At least you can still use the chat from an IRC client and view streams in mpv. If they ruin those aspects I'll probably quit going there. I did also stream on there a bit in the past, but didn't get too attached or locked in, so mostly I care about the viewer experience still.
I have a Twitch account that I can't log into due. They'll send me an e-mail with my username in it but won't send me the password reset e-mail. Their support will acknowledge that I clearly have access to the inbox and will refuse to help or do anything for me to recover my account. They are beyond worthless.