Why do you think American porn is much "rougher" than porn from other countries?

PS: I don't mean to offend anyone, I am only asking since you guys give insightful answers. Also I enjoy writing essays on different cultures etc..

Note, I don't think it is every American company(Nubiles is the exception). I like Nubiles and its more like the porn I am interested in. And they are an American company all I am saying is the they are more of a "niche" and not the norm.

However, overall, I feel like American porn is much rougher than porn from other countries.

For instance, I have been watching porn from the Czech republic and it seems like the emphasis is much more on having nice outfits. Also its more common for the guy to go down
on the girl and for the less dirty talk. I have also seen way more kissing between partners. One guy will kiss one girl then kiss the other girl.

In contrast, I have noticed American porn feature things like choking, face slapping, dirty talk/"verbal abuse"(depending on who you ask), spitting. I am not saying every company but what I am saying is the more mainstream companies like 'teem skeet" or "bangbros" or "exploited college teens."

The best example, is the sugar daddy porn website, the way the camera is set up is grainy and the guy slaps her boobs, the emphasis is on being fast.

Note: I would say anal is the exception it seems most American girls don't do/like anal like in France or Italy.

Theories:- Circumcision, if you are circumsiced you feel less hence you need more "friction" to get off.
-More porn consumption, since prostitution is illegal and escorts re not widely available like other countries I guess the only outlet that most guys have is porn. The more porn you watch the rough content you are into.
Cultural reasons: There was a previous poster in one of my other threads who said that some American women like being tied up.

Note: I want to add that I believe every culture view of sex is different my friend was showing me Japanese porn they did a lot of game shows with sex, I understand some people might find that a weird way of looking at sex. My view is that Puritans view sex as something sinful and you have to "punish" the girls in some way.

Honestly, I don't really know but I am excited to see your answers!