

Leaving aside how gross it is, and separate from whether corporations should be the arbiters of morality:
Incest between parent and child, even if the offspring is of legal age of consent, would imply an insurmountable power differential as well as likely grooming. Incest between siblings would depend on the age differential and authority structure of the family. It’s not a case of incest=abuse, but of how likely it could imply abuse. The challenge is nuance. The goal is harm reduction
I understand that for some incest porn is enjoyable, not because they would commit incest themselves, but because incest=forbidden=naughty=sexy. Maybe that’s you? In any case, you asked how violence is implied, and that’s my take
How, exactly?