True, six genders doesn’t even begin to cover the absolutely critical details of so many people’s sex lives.
We need multi dimensional matrixes, taxa an phyla structures, and a comprehensive coding system to keep track of it all.
And all employers need to know it all in detail to avoid embarrassing fax pas, and subsequent expensive lawsuits. I mean, imagine what would happen if the word “gerbil” was said to the wrong person, or if it wasn’t said to the right person?
The english "sex" derives from the latin "sexus" from "seco", "to cut", which refers to the division of humans and animals into male and female types. It's my impression that the latin "sexus" did not carry any of the semantic load that "sex" does in english. I have a book, THE LATIN SEXUAL VOCABULARY, which details all sorts of interesting and creative terminology concerning the genitalia and the various acts related thereto, but has a single mention of "sexus", which was not evidently a very sexy term. It referred to a simple fact of life preserved for us in the expression, "vive la difference".
So it's interesting to me that in our usage, "sex" has come to mean "sexual activity", of whatever form, and we have resorted to the term of "gender", or "kind", which lends itself to multifarious interpretation, effectively abolishing "sex" per se.