Spotify was also forced to remove 60 or so endpoints from their API: https://developer.spotify.com/documentation/web-api/referenc...

...and add a bunch of other restrictions like limiting API access to premium users, ludicrously increasing the cap for acceptance into the extended quota programme (250k MAU), and so on and so on.

So the most fucked in this situation are neither Spotify nor Anna's Archive, but anyone trying to build anything on top of what was up until this point the most straightforward to use API in the music industry, which annoys me to no end.