I don't know about everyone else's experience but I find Youtube to be pretty good at finding interesting content, especially for music. Curation is necessary but it does work.

Interesting. One of my many many complaints with YTMusic is that it does discovery very poorly. It fills any radio/discovery queue with one or two new songs followed by all the songs already on my playlists.

Other big complaints include no ability to prevent it from substantially using my cell data despite telling it to do everything over wifi. I've taken to just removing network permissions from the app unless I want to add something.

Works fine for me recommending interesting educational and edutainment content.

I'm quite aggressively removing videos I don't like from my watch history, or flag "don't recommend" channels I know won't be for me. If I'm not careful it'll recommend crap for a while.