Seriously?

Yeah, seeing "host/hostess club", 18+, etc listings on PF can be annoying because they're all over the place at times, but who cares? The fact that their letting people know what their venue is about so they can avoid it if they wish is actually a nice thing. It would be brain-dead easy to let word of mouth about an adult content venue spread (like wildfire) but then people like me would end up going to check it out only to NOPE! out of there really fast. Hell, I run a bath house venue and you can bet your sweet bippy that ERP goes on there, but they keep it quiet. I don't ERP because I'm married and that sort of conversation's for my wife only, but what's said in /tell stays in /tell. I once had a couple who'd just been Eternally Bound come in and they sat on top of each other in a bath for an hour or two. Once they left all I could do was /em throws cleaning crystals in the bath then /s Stay out of that for a while folks.

There's a well-liked player auction venue on my DC that's *very* 18+, to the point where you have to agree that you're of legal age and know that adult things happen there before they'll let you in. HOWEVER; that content is kept in an invite only Discord and any ERP services are advertised discreetly and kept to the various FC rooms. Spicy chat is completely legal in the game as long as it's discreet and/or in private. Once it becomes public content, like an accidental /say instead of /tell, then it's reportable.

Lewd mods? One of the link shell discords I'm in has a channel for modding and oooof, no thank you! I'm against all mods, period, and don't use them myself, but I can't control what other players do so it's a fat case of "shoganai" and try not to think about how some people see my character if such things modify all character models.

If you don't agree with 18+ venues then don't visit them. If someone makes an advance on you in any location, tell them straight out that you don't do spicy content and 99% will immediately leave you alone.

That's all you can, and should, do.