"Gender is complicated" isn't argument. Yes, gender is complicated. (Though, 99% of the time, it's not, really.) So what? Why should the conscious subject's sense of its gender be more relevant than chromosomes or sex organs or the sex that society assigns it? We're social beings, and society "assigns" us roles and tells us how to act all the time.
If society has no right to tell Caitlyn that she's a man, then society has no right to tell me that Bruce is a woman.
