I have many friends that complain about these things, that noticed the exact same pattern as you.
And yet, every last single time I've ask them "Have you looked into using a different service? Maybe try one?" they mumble out a noncommittal response and never do.
The question is whether it bothers someone enough to switch, and I cant really say thats the case for me.
Because copying the playlists over and the additional price increase (losing the family plan) are too annoying tbh.
This is it for me. I'm on a family plan so I don't pay for premium and I've over 300 songs in a favourite playlist plus probably 100 odd albums saved. That's a lot for me to try and transfer over.
I've tried amazon music google music and Spotify over the years. Spotify had by far the best library for me. The others were missing tonnes of incredibly big bands albums.
Man I just got Spotify because these two artists I got into don't have bandcamp so it's really hard to actually get files. Not even piracy worked. They're on every streaming platform though.
I'm still bewildered by them changing the "Artists" tab in "Your Library" to show artists you follow (for event notifications) rather than just showing alphabetically, the artists in your library.
Its made the saved library useless for me. Once you have so much music it just becomes ridiculous to group them by album rather than artist. It feels like such an obvious thing that that is how the function should work but no, they insist on trying to make their music streaming service into some kind of social media-music streaming hybrid. Idiots.