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YouTube on TVs is cramming ads down your throat even when pausing videos
(www.androidauthority.com)
This is a most excellent place for technology news and articles.
Sadly it's not, and navigating around it takes a little bit of getting used to (trying to close a video for example is a somewhat counter intuitive). But I'll take it over adds in youtube. That being said, I used it sparsely, as I don't have much I want to watch there except play the odd song or maybe one or two other videos a week.
For android TV you should use smarttubenext, same as tubular, but with a tv interface.