Returning money received fraudulently seems reasonable and unlikely to be challenged by content creators (whom you are presumably clawing it back from). A short "escrow" period to enable this seems unlikely to be challenged by content creators.
The problematic case for chargebacks are probably "all the other ones" that aren't demonstrable fraud.
There will be a lot of people abusing this system to essentially pirate porn - and I’m also unsure if only fans has the type of workforce to review every case
So people can pay for your content, look at it/screenshot it, and then refund it. I think content creators may have an issue with that, yeah.
For instance if they can prove that you defrauded them... as in the Bella Thorne case...