Ethical porn isn't even safe from mistreatment of the women.
On Netflix's Hot Girls Wanted 2 there's a female porn producer/director. She sounds really nice and caring and interested in truly changing the porn world.
Later we see a shoot. There's a woman who has chosen of her own free will to be in a porn film. She appears to genuinely want to. Her on screen partner is a professional porn actor. The filming has to stop because the penetration is painful for her. All well and good, right, this is absolutely ethical porn.
Then the producer/director talks to her. She reminds her that it's her choice to be there, she wants to do it and that the crew is all there waiting for her to finish filming. The newbie is very reluctant to continue, because it's hurting, and more pressure is put on her. She's going to waste a day of filming, waste everybody's time etc. Eventually she gives in. The guy is told to go a bit slower with her because she's not a professional. He replies that he's just doing what he normally does.
This is the making of ethical porn.
And then, a reference to this woman (she was a pianist) come up on Woman's Hour with a couple who talked about only watching ethical porn!!
If we truly understand that as ethical then we accept the premise that vaginal penetration hurting the woman is part and parcel of ethical porn, and that it's wrong for a woman to end a shoot because she is in pain.
There is no way of knowing if ethical porn is actually ethical, if we believe sex to be something pleasurable.