I currently am a Roku streaming stick user using You Tube TV before all the dispute started between Roku and Google - I heard that Roku users could not add a current You Tube TV subscription to a new device - thought about buying a new TV with Roku pre-installed but worry about not being able to add You Tube TV. I don't want to go in a backdoor using You Tube - want the actual You Tube TV channel added.
Don't understand why the extra step through Youtube in order to watch YoutubeTV was such a dealbreaker for some during the dispute, but be that it was.
The dispute ended Dec. 2021, so you can freely install the YoutubeTV Channel/app directly to any supported Roku device and RokuTV.
(https://www.roku.com/blog/update-on-youtube-tv#!)