didn't he say transgender people have their own name and fight in the army?
Bull was a spy, working for the Qun system and even went through re-education. You're telling me he is especially open minded and I'm supposed to buy all this?
He said Krem feels like a man, so he is a man. Sure, even though most people in our present time have issues understading or accepting that, but the most strict culture in the world of Thedas does! Yay.
Iron Bull was just the perfect character to please SJW crowd.
"Qunari strongly believes that genders are inherently and intuitively better at certain tasks. No matter how much aptitude and promise a male shows for management, he will never be considered as good at it as a female, therefor it would be considered inefficent and a waste of resources to place him in a role where a woman might serve better. Instead, the Tamassarans find another role that he shows aptitude for and will place him there instead. The same goes for female, most Qunari will find it odd if a female becomes a warrior. The odd, very rare exception is made however. A male Qunari will farm if he must, just as a female will fight, depending on the circumstances. If a female shows sincere interest to and outstanding talent at fighting, she will be considered male, regardless of her biological gender. For Qunari, gender is a secondary trait compared to their duty to the Qun." - (The Dragon Age Wikipedia on Qunari.)
The Qun is no less strict; it still depends upon an "outstanding talent". The if is bolded because if Krem had lacked a talent when it came to combat but still made the claim, the Tamassarans would have considered him due for either re-education. or the qamek. They've not become acceptant or understanding of transexuality. The final say of your identiy still lies with the Qun and not with you.
"Aqun-Athlok; One who is "born as one gender but lives as another" - (The Dragon Age Wikipedia on Qunlat)
The Qun has no end of term for things and people so it is no surprise they have one in this case. I'll have to dig up Iron Bull's quote to be certain but I do not believe he refers to the Aqun-Athlok as their own division within the Antaam. It seems to be more an explanatory term given to those who were born one gender but became another due to their duty to the Qun.