I think you missed my point, which is that Tinder does seemingly very little to stop it. Even in markets where it is legal, like in the UK where I am, it is actively detrimental to the user experience for most users.

Is the parent saying there is a lot of it on Tinder, and that Tinder isn’t following the law?

Yes, I was saying Tinder is full of straight up prostitution and people seeking sugar daddies who ge offended if you call it out as prostitution. I have nothing against prostitution (and I'm in the UK where it is legal), but I do find it really annoying when dating apps don't do more to keep it off their apps.

Often patterns of fake profiles that were immediately obvious to me as a user took months for them to block.

I personally don't have a problem with prostitution or sex for money as long as it's two consenting adults and not the result of human trafficking like the traditional pimp/prostitute enslavement version. That's why it should be legal and regulated.