I'm curious about what data suggests this, since getting honest answers about sexual activity from the public is a famously difficult challenge.

As an entertaining example, Seth Stephens-Davidowitz's big data book Everybody Lies mentioned a study that asked people in the United States how frequently they had sex, and how frequently they practiced safe sex with a condom. If the resulting data was accurate and projected across the entire country, the United States consume 2.7 billion condoms a year... even though only 600 million condoms are sold in a year.

https://www.theatlantic.com/health/archive/2017/06/our-searc...

My hypothesis is that Americans are both hypersexual (due to media, porn abuse, etc) and thus deprived of good sex as a result of the over stimulation toward faked, idealized, porn-ified sex. I have no evidence for this, it is merely a hunch and seems to align with what I have heard from people who have moved here from other countries. My parents themselves were immigrants and were shocked at the hypersexuality when they moved here. Simultaneously to that, they were shocked you couldn't even see a boob on TV. The natural human body itself was censored but gigantic fake boobs and butts were plastered all over MTV and VH1, albeit clothed. They'd also never heard of the over emphasis and anxiety over penis size until they came here.