And his and McFarlane’s arguments, of course, ignore that superheroes don’t actually exist, and that the production of superhero comics is not actually a biological function determined by whatever bodies we’re born with. A lack of equality in the nobility’s ranks in the medieval military hasn’t kept Tamora Pierce from writing dozens of fantasy novels involving female knights, because that is a thing that you can do in fiction. If superheroes actually existed, and their ranks were exclusively male, writing fantastical fiction to consider how women might handle that sort of power, and how the world might react to their use of it would be a perfectly legitimate subject for superhero fiction to explore. And having two X chromosomes hasn’t actually kept women like Gail Simone from writing wonderful characters of both sexes for decades–nor has possession of a Y chromosome kept men like Dan Slott and Jeff Parker from doing well by characters like She-Hulk and Red She-Hulk. The decision to stay within the narrow lanes of your own fantasies is a choice, not biological determinism.