Can confirm honestly. The FF14 RP community has been very good about promoting awareness and caution in regards to interacting with potential minors since it's inception. With pretty consistent campaigns amongst the community to not engage in questionable story content with people they aren't 100% sure of the age of. No one with a working brain wants to end up in a situation where they might end up exposing a minor to something nefarious. Not just for the sake of the minor but for their own peace of mind as well since it's the adult in that particular equation who could theoretically end up in a world of trouble if they don't do their due diligence. Hell most of my immediate RP circle won't even entertain the idea of RPing with anyone under 18 even for benign scenes, and certainly won't engage in any RP that has a sexual context until they know for a fact that the person they're speaking with is old enough for it. Though most, myself included, avoid sexually explicit RP to begin with and will 'fade to black' if it's absolutely called for in a story.
Are there bad apples out there? Certainly. However the RP community does go out of it's way to try and mitigate the issue already. The issue is that warning people only goes so far. Particularly when a lot of the people who do 'ERP' aren't necessarily RPers to begin with and thus don't always run in the same circles. You'd be amazed at how many 'normal', non-RP affiliated players engage in ERP. A former friend of mine back in ARR used to sell ERP as a service and there were a looooooot of non-RPers lining up for what was on offer. My FC and I can do everything to try and mitigate interaction with minors, but if Random Joe or Jane #35 decides to ERP to let off IRL steam without taking the time to vet the ages of those they're interacting with then there's nothing we can do about it.