And if gender is in fact a spectrum, then every point on that spectrum is non-binary by definition, including the two extremes. Which no real person can reach anyway, because they're social constructs that aren't exactly the same in every society. So if Queer Theory was internally consistent, people who identify with binary genders would be just another kind of non-binary because binary genders literally don't exist. But we are supposed to believe that some people are more non-binary than others, and should be specially categorized as such.

They tell us "there's no such thing as a boy or a girl" but also gender identity is "Who a person knows themself to be. A child may identify as a boy or girl" (in the womb!), so children can know they are something that doesn't exist, and some people are neither of these things that don't exist... but gender identity is absolutely immutable and unmistakable except when it's extremely fluid and hard to pin down... and gender isn't a choice but you have rights based on your "chosen gender"... look, just believe whatever any Queer person says at the moment and stop asking questions, you bigot!