I created this last post where most of us ranted about how bad the new YouTube update for Android TV is as you can not use your original YouTube accounts and they force you to use your actual Google account. This is a problem as we can't access all of our subscriptions, playlists, likes, recommendations, channels, and more.
They could at least offer a migration path or just allow us to use "brand" accounts. It has been 30 days now since release and EVERY SINGLE DAY I have to uninstall this terrible update to access my stuff.
WHEN WILL THEY DO SOMETHING!?
All I can say to do is continue to comment on this announcement thread here and continue to submitting feedback within the App on Android TV.
This is such a pain...
You could disable automatic updates in the play store.