Agree with the search load times, and the TV app is a little frustrating to navigate. But I don't see that as enshittification, just lacking polish.
As for the suggestions, I know you mentioned you don't Plex anymore, but leaving this here just in case it helps:
Settings --> online media sources --> disable everything. You'll have to save each setting though, it's annoying design. But once I did this I didn't see any of that crap on my app.