No, the actual issue with so-called "rape culture" is the way it enables predators by providing them with cover, plausible deniability, social support etc. etc. That's why male-hierarchical and supremacist societies like we see in many places outside the West are a huge problem. (And they hurt males also, since sexual predation often targets them too - much like we'd see in the stereotypes about prison rape in the U.S. It's not homosexuality in the modern Western sense but sexually predatory behavior that's masking as homosexuality. The underlying dynamics are exactly the same as when females are targeted.)

Yeah, maybe. But I'm sure everybody who's not a crazy fuck knows that catcalling a 6 year old is way beyond the boundary.

>The whole discussion around "rape culture" suggests that a lot of people need to be taught where the boundary is.

They're taught by popular culture and outdated notions of masculine identity that the boundaries don't really exist, or that they're just an obstacle to be overcome. Plenty of popular songs teach men that women should consent to sex if a man is aggressive enough or rich enough, or handsome or gets a woman drunk, etc.

Rape culture sends men the message that consent is defined by what they want, and that they're entitled to sex, and that there's something wrong with women who don't give it to them (and, conversely, something wrong with men who can't get it at every opportunity.)