Certainly, gays should probably be considerably more motivated to fight. I'd be chomping at the bit to tackle those who consider me an abomination. And that includes bigoted fundamentals in America. I suppose I'd have a thicker skin, though.
The guy you quote has it wrong, though. "They are not earning their keep because our enemy hates them the most." No. Absolutely not. I refuse to foist disproportionate expectations upon any group because they just so happen to be the target.
Let's say there's a mass murderer who fires randomly into crowds with the aim of killing as many blonde women as possible. He just despises them. Your daughter is a blonde woman. Is it her responsibility to join the police force because, hey, she got us into this mess?