The "gender binary" itself is just cultural sex stereotyping, so pretty much everyone is "non-binary" in practice. As almost no-one behaves as the caricature of

The "gender binary" itself is just cultural sex stereotyping, so pretty much everyone is "non-binary" in practice. As almost no-one behaves as the caricature of femininity or masculinity that some people have unfortunately come to believe represents women and men. So it's not really a useful concept at all, and certainly not as an indication of mental disorder.