Some cases. Not all.
I remember back in the day I would walk by a girl with crew cut hair and follow her with the corner of my eye till I no longer could see her with my peripheral vision. And sub-consciously I would steer myself a little more out of the way in case I get beaten up god forbid because my clothes might have touched her even the slightest. Let's all admit that we've all actd like that and cross the bridge of admittance and recovery and get over it. Moving along now...
Why do we do that? Why do we judge girls by their hair? Why do we look at a girl with short crew cut hair and automatically get scared of them? Because we are imperfect, close minded human beings that was brought up thinking we would get AIDS by using eating utensils that was used by a homosexual. That's why.
I'm not going to lie, but even I've been that judgmental once upon a time, I can't help it. No one taught me any better.
Back to the hair. I've come across short hair lesbians that are bigger poofs than some long hair lesbians that I know. People should learn that a lesbian can not be judged by the length of their hair because perhaps as an individual, they are just plain lazy and really couldn't be bothered with long hair. Perhaps they find it funkier and that long hair is mundane and boring. Perhaps, perhaps.
I've learned that I can never really judge a lesbian by her hair until I get to know her and find out who she actually is as a person, and not the way her hair is styled. Heck, I might even do something with my hair for shits and giggles, but I know my big face wouldn't suit it so I'll just stick with what I've got...for now :)