Yeah, I recently used Soulseek for the first time and it's been great but those chat rooms are shit. Honestly though I'm not using it for chat so after I checked it out and made the same discovery you did, I decided there was nothing to gain there anyway.
Piracy in general is a pretty mixed bag but I don't think those chatrooms represent the community at large. Usually the worst thing people in this community do is just refuse to be helpful. And there are a lot of very generous people who keep this whole thing going.
Soulseek is typically for music but I've found D&D pdfs there too.