With mods FF is probably the most explicit online game by a mile, how I'd imagine second life to be if they brought out a 2.0 and the default assets were Final Fantasy themed.
Some venues even have their own mod packs.
Clubs openly advertise what's necessary in their discords or online games to see each other in a different way.

I am surprised SE hasn't had GM's join the groups and just go on ban sprees.