It's halfway there anyway, it's full of accounts of naked girls and lewd artists. They only need to add "pay $5 a month to gain access to this user's tweets and media" and they'd have 90% of OnlyFans' features.
Appalling that they still haven't got a workable strategy to stop their platform being used to groom and exploit children.
But even if they had, how unsavoury to even be considering running a digital pimping business. When so many women are trafficked into this, they'd still be profiting from sexual abuse, even if they did have a handle on the child sexual abuse.