I think this is where the high incidence of neurodivergence in the trans community and certain subcultures (furries, roleplaying) comes to fore. Autism is often accompanied by identity conflicts - between what you're labeled as, and how people treat you, and how you feel about yourself - because communication disruptions are common when neurotypes are unaligned, and identity is both the reason for and the means by which much interpersonal communication takes place.

People who don't feel resonance between their label, treatment, and self-concept will question why that is, up to questioning aspects of their identity themselves. Once unmoored from a proscribed identity, people can find the ambiguity uncomfortable and untenable, and may adopt a concrete identity that fits more closely.

That doesn't make the adopted identities any less true, of course. Identity is socially-constructed, so deciding that you feel more comfortable presenting as a woman isn't any less justifiable than being assigned good ol' football-playin', roughhousin', English class-hatin', red-blooded American manhood at birth. Calling yourself a wolf or an orc is probably more extreme, especially in general contexts, but at a convention where you're surrounded by a thousand other people who find it easier to connect when they've thrown on a (literal or figurative) bear sark? Go ham.

In the end, of course, you're just you. All of the labels - even the ones you internalize and externalize - are just ways of trying to communicate, and to make being around you easier for other people, in part by giving them a box to put you in and to understand you by, because that's what our pattern-matching ape-brains like. The mask is a mask; it's a cover, not a substitute, for the totality of a person's being.