Ask HN: Why is Reddit deleting NSFW Stable Diffussion subreddits?

As title says. Reddit seems to be on a banning-spree and removing anything that is AI-related and NSFW. The r/StableDiffusion subreddit recently banned NSFW content as well.

There is plenty of NSFW overall on Reddit, but AI-generated NSFW doesn't seem to be mentioned in any site-wide rules, in the Terms of Service and no reasoning is being provided by Reddit.

So why is this happening?