3 things: first, every commanders job just got easier, not harder. I'm around a lot of joint GOs, their relief is palpable and so far, anecdotal only, but 100% of the feedback from their subordinates is reliefe. The Army was telling chicks they'd have to shower next to someone with a dick and if they were concerned they were bigots. For goodness sake, there was far more unease about trying to integrate these folks.
Second, the initial rollout of the policy allowing trannies caused just as much "how do we do this?" It's inevitable with these socially charged issues that the full details take awhile to come out (pun intended). I understand the viewpoint of "have the full policy ready before releasing" but I'd rather just know the bosses intent now and standby on details. And by the way, no one even knew how the old policy could have been implemented without massive changes to GO1. So, confusion has been the defining characteristic of this issue since Obama forced it on the military. That show is have been a clue to leave it alone.
Third, does tranny integration improve mission effectiveness? No. If you want elective surgery when you leave, fine. I'm not the morality police. Be as crazy as you want because freedom! But letting folks transition while on duty by definition takes them out of duty status. And we opened the door to "non-binary" individuals and asexuals and all manner of sexual confusion. Dude I do feel bad for fellow transsexual service members whose future in the service is now closed. On a human level, it's unfortunate for them and I'll show only kindness to any I meet. But this was not good for the mission, and that's where my loyalty is.
Shack. The military didn't want this, Obama forced it. Since he ruled by fiat and decree, it can be undone with a single tweet.