I'm a straight man. Let me tell you what I hear, as a straight man, when I'm told, "Don't worry! Homosexuality is no threat to masculinity..."
I hear that masculinity is something normal, natural, unproblematic. There's no important history to inquire into, nothing interesting to learn, nothing to account for. I hear that, and I feel comforted. As masculine, as a Man, my humanity is affirmed without hesitation. In fact, when told that not only do gay men not threaten my masculinity but that some are masculine themselves, I feel even better about myself. I feel special. Not only is my humanity merely assumed, it turns out that masculinity is a type of status that other people recognize, respect, and aspire to. As masculine, I'm a norm, a standard of humanity.
What's not to like?
