Even within those services you could also just have an actual library that functions the same way as an iPod. You can create playlists or just play your entire library if that’s what you want. There is no need to interact with any algorithm in order to use these services.

How many of the reddit users are bots?

Agreed. It’s literally just them saying “there are a lot of new users and theoretically they could all be bots, therefore they are all bots”.