YouTube app on Apple TV presented me with a dialog to click to update the app because the connection had been lost. Halfway through a video, no less. Of course the button didn’t do anything at all. Not sure where it was supposed to lead.
The biggest problem for me is bad recommending system. There is a random-casting button which generates main page with "categories I have never interested in" (not clear wording, that happens maybe 1 time of 100 visits), and after pressing it the number of clickbait gets surprisingly low and that's how I have found several really interesting channels with less then 1k subscribers. The problem is how to get this button for 100 of 100 visits of mine.