I didn't say it was a line, I said it was a plane. I agree that genders have many different expressions. But it's not a total free-for-all, it's not "anything you can imagine, you can say it's a gender, and if other people fail to respect it, they are being transphobic."

You cannot compel people to engage with wildly fantastical notions just because you want to shoehorn it into the form of a "gender". This is dangerously approaching the one joke territory, where "attack helicopter" must be a valid gender since there are no limits anyone may define for another person without being transphobic. If I reject "attack helicopter" could be a valid nonbinary gender for someone, then I am the one being transphobic. You have gender turned on its head to justify coercing people to identify you as some kind of fairy via the opprobrium of transphobia.