"there is zero evidence to support your claim that they aren't accepted."

How would you know that? Do you seriously think a soldier living in a barracks is going to put on a dress and lipstick for a Saturday night date is going to work?

Being a transgender doesn't mean there are no situations you cannot take part in. And to turn it into a human rights issue or a bigotry issue is just foolish.
There are height requirements to enter the army. A human rights issue?