I have no clue ... I've not gotten that reaction in the past, at least not from confident guys, but you do look pretty hot if that is your pic, so, maybe they think the only way to be interesting or get your attention is by being a jerk. But some blond guys get a lot of attention from white girls. It's a reverse trophy thing, so blond guy may be treated nicer and they get big egos. I don't know really.
I've noticed that blond girls can be pretty shallow, and even if they aren't really very pretty men are all over them and they can get away with being jerks because of it.
Im platinum blonde and I'm straight up mostly not pushy or sensitive. But what you said might have a little truth to it. Blonde guys get a lot of sh*t from other guys, believe me. It's usually because when everyone thinks of blondes they think of the stereotypical dumbass blonde girl. That's just my 2c but really, especially in California when there's so much mixed ethnicity too, blonde guys get a lot of sh*t about their hair color