I can tell you that the old app (on AppleTV) was a bug farm. It was constantly crashing and hanging. I often had to force-quit it. I haven't had enough time with the new app, to see if it's better.
To be fair, many of the other apps also suck. I think it may be because Apple allows TV apps to be written in JavaScript, and some of them are almost certainly poor ports of Web apps.
Neither the old app nor the new app feels like it was written by someone who uses Apple TV.
My pet peeve on the last version was having a carousel movie expand when you pause on it so that it moves things around and hides what you were looking at.
My pet peeve on the new one is a normal swipe on the remote blows through 80% of the carousel items instead of just one.
Neither annoy me as much as Amazon’s hijacking of the touch pad during video so that I can no longer tap the pad to see how far through the movie I am.
I get it, everyone wants their spin on things. But all I want is a usable, consistent experience. It drives me bonkers.
Same on my (admittedly older) Samsung smart tv, but I wonder how much of that was due to resources devoted to writing the new app as opposed to fixing the old one. The new one is 100x better in terms of a usability and generally just working.
To be fair, many of the other apps also suck. I think it may be because Apple allows TV apps to be written in JavaScript, and some of them are almost certainly poor ports of Web apps.