Excuse my ignorance im just curious.
If you go to r/ListOfSubreddits there’s a pinned thread with a REALLY LONG list of NSFW subs, going asking or checking all of them is something that would require time… like, a LOT of time.
For the instances that would be down… I’d really doubt there is one right now, at least the ones I checked just seemed to subscribe to the no NSFW rule.
Most lemmy instances are actually NSFW-friendly https://github.com/maltfield/awesome-lemmy-instances
Well now I’m confused, that list says some instances allow NSFW but when you check their instance rules it says they don’t