I think it's a single user who is trying to start some sort of a soft core porn community oriented towards women. The attempts keep failing (getting downvoted), so they just spin up a new user account and community (with a subtly different name each time) and try again. Ad nauseum.
It's getting really annoying. I've blocked ~~several~~ a couple of the accounts and communities. But a ~~week~~ month or two later a new one appears in the new stream.
And they are not helping themselves. The more communities they spin up the more downvotes they get, because quite a few people are clearly getting annoyed by this behavior.
I don't have a problem with them creating such a community. Not my kind of thing, but each to their own. I just wish they'd stick to a single community and take the time to build it up, instead of spinning up new ones all the time.
Edit: fixed some number and date inaccuracies.