I’m not on Reddit, but I heard that some NSFW subreddits became Christian subreddits, and some SFW subreddits are filled with porn and other stuff (for example, r/interestingasfuck (Interesting As Fuck) became r/interestingasfuck (Interest In Gas Fuck)).

Mods have turned their subreddits into nsfw subs as reddit can’t put ads on those subs.

Reddit forces subreddits open, so some subreddits continue protest in different ways.
/r/pics only allows “sexy pictures of John Oliver” and many others follow suit. I know that at least /r/interestingasfuck started allowing porn, because Reddit cannot monetize nsfw content, but I don’t know if any more subreddits did that.