Here is what I do: I use a firetv with Kodi, Plex, Smart tube Next (free YouTube), and various live TV apps. That’s it!
Unfortunately there is zero way to disable the home screen in order to run a custom desktop environment and there is zero way to replace the Netflix, primetv, DirecTV, etc. buttons on the remote.
Seems like every year it gets harder and harder to change settings on the TV and all the things I just mentioned not being able to do used to be things you could hack together.
It sucks!
Too bad adv commands are blocked on firetvs 😢