I agree on the recommendation piece, but Apple’s playlist and library management is atrocious, especially on desktop. Why can’t I drag-and-drop music into a playlist in the sidebar? Apple Music also feels (to me, at least) much slower than Spotify. Most likely this is due to the more aggressive client-side caching that Spotify does, but it’s worth the trade-off, in my opinion.
These are solvable problems for Apple, though. They need to more cleanly separate the legacy iTunes Store and pay-per-song UX from the Apple Music streaming paradigm. Maybe even have separate apps for them.
The most frustrating thing in Apple Music for me is that it's album-centric. I can't just say "put this artist in my library". No, I have to put every individual album, EP, and single that I want.
long (aapl music)(amzn music)(youtube music), short Spotify.
Their recommendation engine is just not that good. Youtube Music has a far superior one.