Soulseek is still around (somehow) and thriving. Of course on there, discovery is more or less "check out the library of this person who had something you were looking for".
I also spend like 300 to 500 EUR a year on Bandcamp so I don't feel bad about this. Plus a lot of stuff there is just hard to find elsewhere. In times where we keep losing agency through cloud-enshitification, AI-inscrutability and technofeudalism, Soulseek and its community brings me hope.