Almost all streamers have some thirdparty "tip/donation" system set up (usually streamelements/streamlabs via paypal or stripe, sometimes also giving some TTS effects on stream) so that's still possible.
I tried donating via one of these a while ago and got stopped by a requirement to link a Twitch account. Could you give an example of a donation page on there without that requirement?
As I understand it, it bans kids from creating an account. They can still doom scroll or waste their life watching reels without a login, don't they?
This may push social media back to making their content accessible without an account :)