Ignorance about one's body isn't as bad as being ignorant about God and His commandments. There are priorities.
There are possibly males who are equally ignorant.
I don't think for a second that God wants us to be ashamed of our bodies. Modest, yes. Respectful? Sure. But ashamed? Ignorant? No way. HE made them, after all. And he made them the way they are, which is perfect. So there's nothing to be ashamed of.
There are possibly males who are equally ignorant.
There are undoubtedly boys who have been warned against "touching themselves" and who don't understand their perfectly natural sexual reactions. But since women have traditionally been the losers in illicit sexual encounters, I think more stress is put on them to avoid sexual thoughts, and consequently, they tend to be more ignorant more often.
I don't know that for a fact, but I've never met a male who was as ignorant about his body as this poor girl was about hers.