Checked my LG OLED and all the really egregious privacy violating stuff was turned off by default. Still shouldn't be there at all, and I'll never use the built-in WebOS shit, but at least they didn't turn it on with the updates too.
I don't get any weird/invasive popups on my Shield TV when I watch Prime Video either. Not sure if it's just not in the app or if it's being blocked by my pi-hole. I had to get rid of the Fire stick on my other TV though; they have completely ruined that with ads everywhere and no way to control the UI at all anymore. And that's an older Fire OS (Android) model, I can't even imagine what the newest Linux-based trash is like with zero ability to sideload at all. Kind of wild having to go back to built-in Roku because it's least enshittified option now.