Gender is not binary. Some languages have eight or more genders: that is, distinctive ways of treating classes of nouns, pronouns, and adjectives.
Sex is binary: male or female.
While we are swimming against the tide even here I am seeing a few more people picking up the banner.
Perhaps, like saying illegal aliens rather then "undocumented workers" we might see reality injected into the debate yet.
Say it loud, say it proud, say it because it is reality. Sex is binary.