This is awesome! I've been looking for an alternative to the bloated Electron mess that is Spotify's UI for a long time. It leaks memory like a sieve on Linux and is generally a pain to use. I'll try this out later.
I don't find it to be more of a mess than any other electron application though. So that's.. something. My main issue with the snap install (debian) browsing for songs became slow initially. The UI will be there but it'll just show 'no results' for basically any search until after a minute or so.
My issue with the snap installed (Ubuntu in my case) is that Spotify still doesn't handle scaling properly, so I keep having to modify the launcher to add a command line switch for the scaling factor. Of course, every time the app updates, snap overwrites my changes...