AWS has to pay a relatively big money for keeping user data. It is understandable why they would want to delete it. Playlists are basically zero cost to store.

AWS has to pay a relatively big money for keeping user data. It is understandable why they would want to delete it. Playlists are basically zero cost to store. You would spend more $ on delete processing than keeping them around for eternity. So it's just not well thought use-case, implemented without attempt to view the whole picture.