I have a friend who has that (or is that gender, if that is more appropriate). He is my friend and I care about him. I have utter respect for people, especially my friends so understand I'm trying to show respect here.
But I wonder about what causes it.
I've heard about a person with a left arm that felt very strongly that it was not their arm, so much so that they wanted it amputated, even though it was perfectly functional. I've heard it is caused by a mis-wiring of the brain during gestation.
I wonder if the proliferation of genders is caused by something similar, maybe some chemical that humans are being exposed to that is causing this. Because we didn't used to have all these genders. And these new genders don't represent scientifically testable conditions, but rather are expressions about how a person feels about themselves in a social context.
The interesting part to me is that if it is scientifically discovered that new genders are caused by a chemical in the environment, we won't be able to sue the company for that chemical. Because the genders are all "respected" so there is no problem to rectify and no damage can be levied.
I suppose each person could choose for themselves to have their gender respected, or to sue the company because their gender was caused by a chemical.
This is all highly speculative.