No sense in trying to understand how poster would justify a sex change procedure while the recipient thereof is supposed to be defending their country.
Is the soldier supposed to wack the enemy in the head with his new dick ?
When I was in the service, I got operations on both feet to correct bunions. This was a congenital issue, not service related, but the Army felt obligated to pay to get it done.
Now, the Army could have just as easily said, "Not our problem, Sergeant, thank you for your service." But they were kind enough to do it.
Now, going back to your original point, if you read the article, you see the threshold to get a sex reassignment surgery is actually pretty ******* high. It's not like you can just walk in for sick call one morning and say you feel like a woman.