Guys c’mon.
No one is saying that boys are pigs, or terrible animals or something. I’ve heard Rabbi Wallerstein speak and he does not bash guys like that.
But its just a fact that they have a very strong yetzer hara, and therefore may very likely be looking at the girl not for who she is. It’s just informing girls to understand how guys tick and therefore to be able to make smart choices.
That’ all. No need to get insulted.