At that point you might as well not have a kernel level anti cheat and companies who insist on kernel level anti cheat will block wine. The only solutions I see are

1. Developers mainly use server side anti cheat
2. They make native Linux games
3. Distros provide a way to ensure a untainted (signed) kernel

AFAIK they bought their only real competition (funimation). Regarding recommendations: I personally find piracy streaming sites have the best recommendations, I mostly use them just for recommendations and don’t even watch there, also you could take a look at !anime@ani.social, specifically the recommendation threads

The problem with web apps is that even if the messenger is perfectly secure your web browser/webview provider might not be. Like with windows recall, even if you have the most secure messenger it doesn’t matter if an underlying function scans your info. This doesn’t mean there shouldn’t be the option for a webapp, but it shouldn’t be the default.