It seems like they're just trying to save their asses now. I don't trust their sincerity at all here, as you can see they had some ACTUAL arguments and discussions about the topic when the mod brought it up first. The mod's first clarification was: "we're allowing underage looking +18 content" and it's still not even removed!

And from another one:

characters who are petite/young-looking but not obviously underage are ALLOWED because as an instance the votes decided that banning all of it was destructive, and differentiating between them can be impossible.

Seems shady to me. Gotta keep an eye on them.