That sounds really frustrating! It’s one of those cases where it feels like the system is actively working against the listener

some time ago when I canceled spotify, they show this special playlist like "we'll miss you" or whatever, and each of the song names, in order, spell out this little goodbye message. Ironically one of the songs in that playlist was greyed out and unplayable. Like, great job reminding me why I'm canceling :)

It's probably not Spotify's fault though, but it's actually on account of being able to finely control legal ownership of licensed songs. This is all insane imo, but legally sound. Welcome to the future.