Near as I can figure, folks who overly identify with being a woman or a man, and being binary, and feel that is who they are? Solely? Probably feel threatened by non-binary or transgender. The idea of someone being a woman inside a male body, or a man inside a woman's body, or neither, somehow undermines their sense of self, perception of the world, and beliefs?

I genuinely have no idea why on earth these people are so invested in other people's business, and I'm not sure I want to understand either.