Has anyone else noticed this shit where all of your attempts at discussion with zoomers devolve into discussion of what porn you "ironically" watched?
Hate to break it to you, but that's just how younger people are. They'll grow out of it in a decade, and then whine about their kids having weird interests and autistic coomsumer speaking habits in the 2040's and want to ban Augmented Reality Porn and fembots.
That’s missing the point of the bigger question which is why such filth is so popular even on porn sites. One would imagine incest content would be a more niche thing like scat porn or BDSM.
The incest/stepcest stuff exploded largely because GOT made it mainstream, and because it's extremely easy to make. It's just regular porn but you have "sister/brother/mother" added to the dialogue and suddenly it's a stepcest vid. Amateur porn also blew up due to streaming sites and more recently due to Covid, and the low-cost nature of stepcest content makes it easy for amateurs to do in their own homes. Same for the low-effort "stuck" fetish that usually goes along with stepcest vids.
Porn sites have very low profit margins since so much of it is pirated to streaming sites, so porn studios have had to increasingly cater to more niche audiences to make any money. Niche audiences are more willing to spend money to get what they want because, generally, its been harder to find. As a result, all porn has shifted towards more extreme content just to keep in business, which in turn floods the streaming sites with more extreme videos.
It's why every pornstar now does full anal gangbangs from her first film, whereas back 10-15 years ago there were girls who never did anal their whole career or saved it for when they were started to drop in popularity. Same goes for interracial gangbangs, tranny sex, huge insertions, and those gross vomit-blowjob films. It's also why all modern pornstars look like crackwhores; because they are. Anyone cute and not covered in neck tattoos is on OF or streaming on Twitch, instead of subjecting themselves to getting fucked in the ass by 6 imported Africans in some East European hotel room and pissed on.
It's similar to how all art/craft sites eventually become filled with furry porn; furries, for whatever reason, spend their disposable income on their fetish more than almost any other group, and artists ultimately go where the money is. If you start out selling handmade stuffed animals for children, you'll be making custom furry suits on commission within five years because it's a guaranteed $3k/month.