I don't see how, I mean, if I think I'm a pony, I obviously have a pony mindset and I'm therefore a pony. It's rude to refer to me otherwise, right?
You're relating gender to species which is completely and utterly incorrect.
Species definition:
1. Biology
a. A fundamental category of taxonomic classification, ranking below a genus or subgenus and consisting of related organisms capable of interbreeding. See Table at taxonomy.
b. An organism belonging to such a category, represented in binomial nomenclature by an uncapitalized Latin adjective or noun following a capitalized genus name, as in Ananas comosus, the pineapple, and Equus caballus, the horse.Gender Definition:
2
a : love <the feminine gender>
b : the behavioral, cultural, or psychological traits typically associated with one loveI'm not saying that Dusty is not male because he or she wants to be female; I'm saying that gender is not defined by what genitalia you possess, although some things are.