How is this allowed?

[CVXIV]

Yeah I don't doubt it happens, but on the rare occasions I use PF, I look for what I'm interested in. Similarly, if I'm at the MB in Limsa I'm not reading chat unless it is from my FC.

I can see the sense in providing a toggle option that filters listings and chat that feature "18+" and "NSFW" as part of a more sophisticated block/self-exclusion function. But to answer the question posed in your OP, it is allowed because it does not violate ToS.

I think if they added a tag to party finder listings where you can select "RP" would go a long way, but that ultimately depends on whether people would actually properly tag their party finder lol

but I imagine with it, you could potentially filter it out, and if you actively want to see those listings then you can filter to only see them

the muted words list could also be doing a lot more since I believe even when you have certain words blocked, it'll still show a message saying it contained a blocked word ather than not showing anything