And how could ANY man, straight or gay or whatever, shave the hair off his chest, arms, & legs?
To many, that's a lot more unmanly than bleaching one's hair, that is if one needs to be hung up on what's proper regarding hair in the first place.
Life is a lot more important, and has lots more meaningful mysteries than to be hung up on whether someone is gay or not or why someone fucks around with his or her hair. One would really have to be bored or mighty shallow to put that issue as number one on his or her agenda.