> 2. Spotify client is no longer being developed for Linux
As a consolation, I'm aware of a number of music clients on Linux that can stream from Spotify via their API. Ad-supported accounts don't have access to the API, of course.
These rely on libspotify which Spotify have not updated for years. Sadly they recently also removed the download links from their site. The new Linux SDK has been promised for a couple of years now but nothing has emerged. The future for Spotify on Linux looks bleak.
As a consolation, I'm aware of a number of music clients on Linux that can stream from Spotify via their API. Ad-supported accounts don't have access to the API, of course.