Music communities/discussion is not the same as spotify music discovery.

Well they specifically asked “if I don’t use a streaming service”.

Communities can recommend you music that is the same genre as the music you like.

They can, but you can also try something else.

Algorithms can recommend music that you will like as much as your input taste.

To some degree, but there are other ways (better imho) of broadening your horizon.

original comment:

Honest question, how else do I easily discover music that matches my taste if I don’t use a streaming service?