aTV2 was great for me. Easy to jail break, ran Plex problem free for several years, and was sold for a profit.
aTV3 didn't really improve anything, and was much more problematic keeping Plex working (using PlexConnect) with an easy to identify icon.
aTV4 is the greatest, although I still wish they hadn't removed the optical out and I didn't need another small powered device behind the TV.
It definitely wasn't supported for that long though. Apple TV 2 hasn't seen updates since 2014, it never got the flat UI, YouTube stopped working. It has essentially been an airplay box with 720p Netflix for 2 1/2 years. I'm not that mad about it but to act like apple just stopped support in march 2017 is misleading.
Becoming? Mine never worked right at all. Couldn't reliably play iTunes Music. I don't think I ever got it to play a movie or TV show without getting "Connection unsuccessful" errors. Other streaming boxes and other services work ok.
It's hard to want to be in the iTunes ecosystem for video when the only hardware that can play it is from Apple, and I can't rely on them to make things that work.
Oh crap! Another $100.00 device that's becoming a paperweight.
Oh really, like what? I'm intrigued.
So; how much longer can we expect to keep using these?