As an iOS user who has experienced some of these same issues, I can assure you that nobody at Spotify cares about my platform's app experience either.

The "continuing to play audio after bt disconnect" is particularly obnoxious to me, and has been happening for something like 5 years now. The latest update has trouble just scrolling through my entire Library, because why would anyone have more than a few dozen followed artists!?!?! (I have a couple hundred, and the latest update forced artists, playlists, and albums all to list together into one enormous muddle in Library).