But it does bring up an intriguing point. I guess the difference is that for openly gay men to serve in the military, it requires a completely different set of guidelines because openly gay men are and will inevitably become attracted to some of their fellow soldiers -- regardless of whether or not they ever admit it.
Heck, for me, there were a few women I served with who I found absolutely gorgeous! Most of them I wouldn't tell them, because I wanted to be respectful and remain professional. And it certainly would never be allowed to force them to shower or sleep with other Marines including myself, mainly because the military should not be sexualized.
So, what would possibly make it OK to force straight men to shower and sleep with openly gay men, who may or may not be attracted to you? That would make me so uncomfortable that it would certainly cause issues.