IIRC The name got wrongly mixed up with some people hacking the Spotify API to boost their songs' play count and I think the project ultimately died because of that rep
Nah, ludde wrote spotiamp while working for Spotify. He's same guy that wrote utorrent and tunsafe (unofficial windows wireguard app). I believe it was a one-off project. There was a security vulnerability in the latest version of the app, but spotify fixed server-side and the older versions were not affected. There was an unrelated spotiamp project that I think was a winamp plugin, that's the bad one.
Spotiamp still mostly works but libspotify clients are deprecated, so search is broken and you need to jam spotify url's in to add music.