Not Western culture. Anglophone culture. Vast swathes of European cultures are quite happy with nudity; I remember nude sunbathing in Amsterdam in the summer being very common and not at all sexual. Denmark recently found fame for Dillermand, literally translating as "willy man", an animated children's show about a man with a prehensile stripey penis (1). He gets into trouble using it inappropriately -- for example by putting petrol on a barbecue with it. Owch.

I'd much rather children grow up knowing what the other gender looks like naked with that knowledge being delivered in some environment other than PornHub. It's insane -- I literally only knew about the female form from reading medical textbooks as a child and had never seen a naked woman until I was 19. Many women have no idea what their own anatomy is, because cultures have such a taboo about it. Yet on American cultural exports, love, breasts or bodies get an 18+ rating and explosions, shooting and murder get a prime-time action TV slot. I don't get it.

Everyone's naked under their clothes.

(1): https://www.theguardian.com/world/2021/jan/06/john-dillerman...

The point here, is what the advertisers want to spend their money on.

Use whatever euphemism or descriptive word you want. The point here, is that advertisers do not want to be associated with whatever it is you want you call it.