"I find the idea that all attractive / young women somehow have this knowledge and what's more than that they use it to be really dodgy.
Yes, it's a dodgy idea to verbalise, because men will, on the whole, jump on that and say "ha!see! I knew it!".
But it does happen, although I'm not sure how much young women actually realise that is why men are nice to them, or let them get away with stuff, or give them preferential treatment."
Yes this is kind of the point - maybe pretty girls do get stuff (whatever it might be) but lots of them aren't looking for it and if it happens they aren't aware it's happening. The spin that men put on this is that all pretty women are knowing, manipulative, and trying to get stuff from men. I was attractive when young and I disliked this type of attention, I got in trouble, really, for not smiling prettily and looking impressed when more powerful men expected me to. If people (men) gave me stuff then it wasn't because I was trying - and therefore that's not on me, is it.
I did get served in pubs incredibly quickly which doesn't happen any more - at the time I put it down to making eye contact and smiling rather than dismissively waving notes, and I'm still not sure it wasn't that as women served me really quickly then too
but it certainly doesn't happen any more!
Anyway point is - men paint a picture of women and girls who they deem attractive of being inherently exploitative, manipulative and sexually knowing, even when we are very young (underage). This is a lie and a dangerous one, all it is, is an excuse for men to treat us badly up to and includign rape (she knew what she was getting into / she was asking for it).
Certainly there are women who do exploit their looks and men too - but the story goes only 1 way.