The studies around this are very often heavily biased.

The main reason it was pushed in the states in the first place was because of an anti-masturbatory craze.

Growing up (like 25 years ago) it was a bit weird how lotion was so strongly shorthand for masturbation in American TV and movies. Didn't really get it until I learned a lot of circumcised guys prefer or even require lotion for masturbation.

Curious study. I personally only have my self as a test subject, so it's quite subjective, however I use the foreskin quite a bit for stimulation, not really as an erogenous zone, more of a way to slide it in, it also helps prevent lubricants from drying up, since without at least spit it just hurts. It's REALLY sensitive under there and fucking hurts when rubbed by just about anything else, if I didn't have foreskin, it would have to become significantly more numb before I could rejoin society. Actual sex might not be as affected, but masturbation as I know it would cease to be.

It’s not really true to say science shows that the foreskin is erogenous or even that circumcision affects sexual pleasure.

https://bjui-journals.onlinelibrary.wiley.com/doi/abs/10.1111/j.1464-410X.2006.06685.x

"The glans of the circumcised penis is less sensitive to fine touch than the glans of the uncircumcised penis. The transitional region from the external to the internal prepuce is the most sensitive region of the uncircumcised penis and more sensitive than the most sensitive region of the circumcised penis. Circumcision ablates the most sensitive parts of the penis."

https://pubmed.ncbi.nlm.nih.gov/23374102/

"This study confirms the importance of the foreskin for penile sensitivity, overall sexual satisfaction, and penile functioning. Furthermore, this study shows that a higher percentage of circumcised men experience discomfort or pain and unusual sensations as compared with the uncircumcised population. Before circumcision without medical indication, adult men, and parents considering circumcision of their sons, should be informed of the importance of the foreskin in male sexuality. "

Source

Heads up, that source is written by Brian J. Morris, who is rather infamous having a circumcision fetish, and has a habit of peddling shitty studies meant to skew cultural acceptance of circumcision. Nine times out of ten, when people post pro-circumcision studies, they're from him. He is downright obsessed with it, constantly pumping out studies and publications solely about circumcision.

https://en.intactiwiki.org/wiki/Circlist

Take this above link with a grain of salt, it is literally from intact wiki, but still.

Here is a more educated breakdown:

https://threadreaderapp.com/thread/1078529309478838272.html

As the owner of a foreskin, fuck science. Yes, it is erogenous.

there isn't conflicting data, there's people without foreskins not knowing what they've lost and people with foreskins who don't know how to jerk it properly.

as someone with a foreskin i can tell you with the utmost certainty that it is an erogenous zone and makes the experience infinitely better, it is unfathomable to me how circumcized people are even capable of masturbation and intercourse, it's like trying to swim without feet.

Brian Morris is a sadistic fundamentalist Christian creep and a fraud

There's also this comment that goes into it well

He was also an advocate for female circumcision (which is illegal in most of the non-muslim world and is mostly used as a mechanism to prevent women from having sex or to remove the pleasure from sex, it's a very cruel act)

In the same thread you can find this (the link doesn't work anymore though)

Another person already wrote about the academic bias that Brian Morris has, and how he's trying to tilt the body of research to support circumcision. It's also important to note that Brian Morris has a circumcision fetish, he gets sexual pleasure from seeing people getting circumcised and he is a member of the Gilgal Society, a circ fetish group. His name has been included in Gilgal pamphlets and in some of his early research papers he thanked the Gilgals for providing information and support.

You can verify some of the information I wrote on this page https://www.circumstitions.com/morris.html

I recently found a sub called r/DebunkingIntactivism (a "pro-circumcision" sub) and it's... it's fucking nutters. The people there talk like they've completely lost their minds. It's basically where a bunch of insecure circumcised dudes go to fume over other people not being mutilated, and make "slurs" for them and stuff. Anyways the few weirdos that are active in that sub love to cite that guy and only that guy a lot.

False. Educate yourself on the ridged band and frenulum