A lot of the worst exploitation in the porn industry is because the producers control the purse strings. I imagine OnlyFans has already offered some corrective pressure there. Lightning would be another payment channel that would help in that same direction.

The big advantage of offering lightning payment, in my mind, is the expansion of potential customers. There must be many men who aren't willing to put those charges on a credit card, but would be willing to pay over a network like lightning.

All that said, I won't be surprised if AI almost completely replaces real people porn, in the near future.