I'm a big fan of the droid, google not so much, but I am of Android. But Android TV is just...well....a bit shit. I purchased a Mi Box S and found that there were bugger all options in the Android TV Play Store (not sure if that was just because I live in NZ), I sideloaded a couple of apps and they came up on a horizontal view and so were unworkable. I got Netflix and Spotify ok, but the interface is cluttered and a bit rubbish really when you compare to an Apple TV. I really wish google would invest some of it's not insignificant resources to Android TV and make it a serious competitor to Apple in this space. My wife and daughter are not so tech savvy so they find andoid tv just a waste of time, why use when you plug in a Apple TV and it just works (minus Spotify of course...).
Your entire problem is you think Android and Android TV are meant to be the same and run the same apps.