Not personally, but I have seen it. I just have so much stuff I never found the need to have other people to connect with for stuff I am missing so it didn't seem worth it. The only stuff I find I want is stuff that's new release and get it within a few weeks when I have time.

I use navidrome and it uses the subsonic API so I'm guessing funkwhale should still work with it but I never looked into it. I host for myself really, my wife, father, and a few friends will use it from sparingly.