Yes I agree that those who don’t exactly fit are interesting and are no less than anyone else. I’m transgender ftm and consider myself bi, but I don’t consider myself both female&male I consider myself ENTIRELY male.
if I met someone with both genders or transgender they still somewhat fall into bisexual, because bi means men&woman, so a trans would comply as being female or male depending on how they identify, someone with both would also comply hence falling into both categories of male&female, and someone who considered themselves neutral I would be willing to overlook a silly word like “bi” for.
I’d also hope that someone who is bisexual would accept me as a potential mate, considering I AM male, and that being physically female also falls into the category of both female&male, and that one day I plan to be physically male.
I don’t think bi exactly means “one or the other” I think it can accept a variety, and also hold exceptions for those who are neutral.