Defining "red-pilled" as understanding how the dating market works and how women's underlying behavior/preferences influences the dating market (eg. hypergamy, 80/20, alpha-fux beta-bucks, what makes someone a "Chad", etc.)

Ignoring the prescriptive elements (eg. holding frame) and focusing on the prevalence of the Red Pill philosophy/theory.

I think most Americans are red-pilled, either naturally or through the internet.

Most women with an ounce of self-awareness understand the core ideas of The Red Pill because its based off their behavior/preferences. Women know they exclusively want to date someone better than them (taller, more money, more status, etc), and what makes someone a Chad or an alpha compared to a beta. They also know how their friends behave and what they prefer. They're just not going to openly admit Red Pill ideas because it shows they have a systematic advantage in the dating market and women don't like to show their upper hand.

A growing number of men are becoming red-pilled through Reddit, Tik Tok, and YouTube. Because the community is quarantined and there's a stigma attached to the manosphere, men are also not going to admit participation or understanding. As more men become sexless I imagine the community will continue to grow.

Most women naturally understand TRP and a significant growing chunk of men do too, which leads me to believe that most people (in America) understand TRP but because it doesn't make women look like saints the philosophy isn't openly accepted in society.