> if you do like to discover new music, self-hosting just isn't an option

Sure it is. Music discovery via algorithmic services is not the only way. There's radio, talking to people who have similar interests, reading interviews with musicians who talk about other music they like, browsing selections at the library, reading books about music or musicians, even just reading the liner notes for an album, noticing some players you like and finding other things they've worked on, and on and on and on. It doesn't have to be high effort, it's not instant, but it works great.