re: "America is hypersexual and extremely liberal when it comes to sex"
Compared to who? There are many countries much more sex-postive than the USA. America's long strong Puritan tradition makes real sex education impossible creating enormous problems for us. We had a MASSIVE HYSTERICAL meltdown over a half-second glimpse of Janet Jackson's boob.
Over the last 10 to 20 years lots of people started talking about sex a lot. Gens Y and Z seem obsessed with it. BUT they are having less sex than any previous generation at their age. They convince themselves that they are sex positive but they constantly go "Ew! Ick! Gross! That's sus! Inapropriate! Don't Sexualize!!!" etc.
I really think that in the 80s we had twice as much sex, but talked about it half as much as today's 20 year olds.