Something big is happening, as Reddit seems to have purged literally every NSFW sub they know. Reason is always "unmoderated" despite some of the banned subreddits being fully moderated.
Edit: seems to have been a bug in automation (thanks @[email protected]):
https://old.reddit.com/r/ModSupport/comments/1ii67mt/_/mb3fewv
It's still a good reminder on how quickly a community (or communities) thousands of people enjoy and in some cases rely upon can disappear.
I wouldn't be surprised if it turns out they're making a ban list for all these communities, but the 'glitch' was that someone turned it on before whatever PR move/manufactured scandal they were going to use to justify it was ready to go.
Or this was just a test fire to see how people would react.