I'm really turned off in porn when suddenly the guy switches from vaginal to anal. It's a massive boner-killer. I'm such a porn freak that I know which porn stars never or rarely give anal sex, and like them more because of it. You already have a hole down there for that! And POOP comes out of there!

It's in the realm of interracial sex: it lowers their value. You'll note that the porn girls who are "anal princesses" fall into the same categories as the porn girls who do a lot of black sex on camera: 3rd tier in terms of looks of porn stars.

Martin Amis (!) noted the rise of anal sex in porn more than a decade
ago. He was werided out by how much he saw anal sex suddenly being pushed from porn producers without any demand from consumers. Like it was part of a social engineering plan....

I think we do have to think that gays have pushed the anal sex agenda into straight porn---this is just another subtle slippery-slope form of gay recruitment. Once you've got a guy thinking anal sex is ok and fun and got him sticking it where POOP comes from, the gays can say "well an anus is an anus and a mouth is a mouth" to a lonely or confused or drugged-up straight guy and get him into their little beds.