I have to wonder if this was too much for even those who strongly favored homosexual members of the military openly serving. While it became increasingly difficult, and finally impossible, for opponents to sustain the argument that gays serving in the military would lead to problems, it is obvious to all but the most radical, that open service by transgender people is just unworkable.
Even as extremist kooks like Mr. "Autumn" Sandeen, Mr. "Monica" Helms, and even everyone's least favorite racist, Mr. "Monica" Roberts screech their shrill demands for open transgender service, anyone with a shred of sense can see numerous problems. The simplest would be where such service members would be housed. If they are housed with members of their own sex, that would present problems. Housing them with those who they claim to identify with would be an even greater problem. And let's not even go in the direction of having a separate transgender unit. That would just be insane.
Of course, the transgender bloggers have been somewhat quick to react, claiming that he was fired because of gay anti-transgender bias. Anything to avoid facing the fact that one of their favorite demands is too much for even those who opposed Don't Ask, Don't Tell to swallow.
As the transgender community makes sillier and sillier demands, they can expect more and more pushback from those who are not, well, as insane as they are.