Because apparently all of them have an inherent urge to sexually assault others, and they think it isn’t fair that someone like them can dress as a woman to assault people in the women’s bathroom.
If porn does any damage to the psyche, surely it’s less than videos you can find showing torture and murder, right? At least in porn, people are shown having a good time. I’ll also note that no porn is burned into my brain, but there are sure some other videos that are.