Right there in the Chargers cutscene and after with Iron Bull expanding on it.
And then fans use that to clarify Sten's earlier views on the matter. Bull gives the Qun's basic view of such things, and when the writers were asked to clarify, they expanded. It's not unexpected that it would need clarification, it's a rather complicated issue for Bull to sit the Inquisitor down and have a pow-wow. Bull even seems a little short with the Inquisitor over it. Most Qunari probably wouldn't be as defensive of Krem's being identified as a man, just befuddled as to why people would refer him as a her. Bull, being over-protective and more familiar with outsiders, goes all mother-hen.
I think fanon was actually the opposite, that transsexuals lives would be nightmarish under the Qun.
And I was being an ass because I misread your post as asking why Bull didn't have the same problem that Sten did.
I never interpreted it as a Qun thing tbh. Like when I meet a transexual (or whatever the right word for Krem who still has the female body) and they tell me "In fact, I am fe/male", I also just accept this. Only my thinking being "Their brain is fe/male, whatever the body looks like, so this is it". But I can still accept a transgender (?) in a male body, saying she were female, who does martial arts or is a soldier. Because the profession and the "felt" gender are unrelated for me. The idea of the Qun as I understood it from what the fandom says ("The profession determines the gender, not biology") is still a bit different and I just never saw it clearly stated in the game.
I just thought Bull were simply very liberal, not interested in the body and accepting the feelings and thoughts of Krem, i.e. the personality, as being more important. I think I especially thought so because Bull gets sort of passive-aggressive (like "Stop this, don't even think it, Krem says he's a man so that is what he is, period"). Or that's how I interpreted it. No confusion as to why I would even question the gender or a warrior (because any warrior were obviously male), but rather a "I will defend Krem and if you got a problem with him you got a problem with me so let it go". Bull has the awareness for Krem not being "normal" in society. But if the Qun didn't distinguish gender based on the body, he should not have that awareness and instead be confused. (I find it so damn hard to express what I mean... does it make any sense?)
Which is why I said Bull is a bad example. He's lived outside the Qun for so long, even says so himself, that he is detached from it, having adopted an "external's" point of view. He is not actually Qunari anymore.
And the things he said I did not understand as referring to the gender of a person. So at least I want them to subsequently explain this more thoroughly in later games, hopefully when we go to Par Vollen (and see some "female" warriors, that would be cool).
Though the whole gender issue makes absolutely no sense in the first place. If the Qunari are bred, basically manufactured, why do they need different body types (i.e. genders) at all? Of course they don't need to distinguish male and female if they are just test-tube babies anyway. So why not carry the concept much further even? Oh god, I really shouldn't start thinking about it, I already start to see too many inconsistencies and gaps. 
Retour en haut
(Nothing to see here. Move along. The breeding program made no error.) 
