Or rather, the concept of people not being straight is one I feel they more or less understand in their world. But it is very much deemed not normal and something to be hidden.
Nobody reacts when Ymir talks about wanting to marry Krista because of her very over-the-top, almost joking manner. I feel the way that one perv reacted to finding out Armin was a dude is more representative of the societal view of homosexuality (telling Armin to take responsibility for turning him abnormal aka he got a boner from armin now he is abnormal)
admittedly, Armin has always been fairly decent on it cause to him it was a case of. Yes, that sure is aberrant behaviour. But also, he himself has been engaging in heresy since he was eight or so, so like. Fuck society on certain things.
mind you, i don't think he has ever told more than two people about it, but that is more an 'armin is super private about personal things' situation. He wouldn't have told people about any crushes he would've had on girls either
(I am surprised people haven't called out Armin about his crush because whenever he talks about Newt it's like. the verbal equivalent of dotting every I with a heart)
and then he got a crush on a cute wizard and now he is bigood job armin proud of youhe was a very cute british wizard, Armin was defencelessmind you, i don't think he has ever told more than two people about it, but that is more an 'armin is super private about personal things' situation. He wouldn't have told people about any crushes he would've had on girls eitherNo one can blame himwho wouldn't have a crush on this cute face? Fools that is who