Every generation has its own version of the misfit crowd who have no interest in acting or appearing to be "mainstream" — think of goths, or hippies, or punks, and so on. Chances are, many of those who took up Birkenstocks and stopped shaving eventually went back to closed-toe shoes and picked up their razors again.
And some of you might remember the late '90s swing music revival. While yes, it was fun, and some folks from those days might still cut a rug to the Squirrel Nut Zippers, if you invested in a zoot suit company, you probably never saw that money again. It was, of course, just a passing fad.
Being non-binary is not like that. With fads, you put on your goth makeup or your zoot suit to fit into the crowd. Coming out is a matter of taking off the costume you've always been wearing and finally embracing your true self.