The military is not civilian life. You dint have the freedoms of the rest of the country. It is not a drafting military where you have no choice. They are not run via the bill of rights or constitution.
The military is a killing machine, they have their own laws, laws that have been around a long time and have served this nation quite well in past engagements. As a solder, it's not your job to ask why, it's your job to do and if that means charge a machine gun position on the top of hill, that's what it means.
You must have absolute trust that everyone in a combat position is on the same page. Not just for your safety, but for everyone else in the units safety and taken further out to the battalion and front level. Everyone must trust that everyone will do as they are ordered.
Recuits have their heads shaved to remove their individuality. It is an Army of One ... One Army, not one individual.
When you insert into the mix anything that breeds suspision in a shipmate or platoon gunner, you mess with that level of trust.
Woman and men in combat situations is dangerous, not because of the sexual contact, but because of a males natural instint to protect the female. If she is in danger, there is a chance that he will violate orders to protect her.
The fear is a gay male is one of a possible sexual rejection by someone in his foxhole and what effect that will have. Do you trust the man that you just turned away? Does he have your back or will he hold a grudge?
Not this is not an issue this will be resolved in time one way or another. Do not think that the issue is closed because of something was passed or repealled or enacted. The military will adjust to the new guideline and if problems arise from it, they will patition the Pres to change the ruling. And guess what, the pres will weigh the evidence and make another ruling. The protection of this nation is the goal, not making someone feel better about themselves