Because of the whole Jo Kwon thing...

[gardenofeden]

I wanna try and explain the whole concept of a gender outside of the binary.

Lets get one thing straight

sex and gender aren't the same thing. sex is a physical thing (but it can be modified with surgery) and gender isn't.

here are some really helpful sites and videos

https://www.hrc.org/resources/sexual-orientation-and-gender-identity-terminology-and-definitions
https://www.thetrevorproject.org/trvr_support_center/trans-gender-identity/

so please try and respect peoples feelings and everything