I think the world is shifting their views on gender, and there are people who are really resistant to this idea.
It used to be that men who weren't stereotypically "masculine" and women who weren't stereotypically "feminine" chose to fight to be considered as men or as women. The messaging when I was growing up is that "girl" or "women" didn't mean just one thing, or that it didn't even mean femininity. Same for men. That was stressed. But the gender binary itself was very concrete.
Both men and women who fell out of the stereotypes of "men" and "women" fought tirelessly for space there. Many of these people were also LGB.
But the gender binary has moved. It has now expanded. Folks see less and less of a reason to even fight that hard to belong there in the first place, when they themselves don't even really feel connected to the binary itself.
The fact that so many of you have expressed such disdain at Nikki for choosing to come out and identify this way says a lot about you. Don't act like "you don't care" when you come on here to rant about it. You do care. This cultural shift bothers you. It flies in the face of everything you were told about the world and people in it. You dislike the diversity. Just admit it.