El somni de l’eunuc, per Jean Lecomte. Oli sobre fusta. 1874.

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El somni de l’eunuc, per Jean Lecomte. Oli sobre fusta. 1874.
sex is a spectrum
[image description: infinity symbol mixed to Venus and Mars signs in each sides. end ID]
That should go without saying but this needs to be said: "infinite spectrum" is probably a pleonasm because it's in its definition.
As biopsychosocial beings, our sexes are also biopsychosocial constructs. It's tied to both corporeal/incorporeal contexts (or material/immaterial bodies), such as mind/mentality, socialization and nature.
Social constructionism ≠ meaninglessness.
When a biologist says sex is social construct (constructed socially) it's because all biology and science are entirely build and organized by society, it's just another way of saying "we live in a society" and it translates as made up literally. But in fact it's more than just that, this is a mixture of biopsychosocial and physicochemical constructs, in my PoV (nature/naturality=society).
What's "gendering sex"?
Intersex is not a gender (however some intersex people have their gender experience tied to their sex because identity narratives). Male and female are gender categories, therefore when you use them to describe your sex it's called gendering your sex, in other words it's socializing gender into your body.
Some examples an eunuch cis man can socialize their genital/gonadal sex as genderless, while other transgenital(ized) cisgender people can still associate their genitals with their gender attributed at birth; a bigonadal/ovotestis person can still gender their sex/gonads with a binary term (like male/female).
This is called freedom to self-determine labels for yourself. I have to point out here that being intersex is innate, altersex is not (at all).
Affirming sex is not finite, binary or dually identical, recognize that endosex/perisex/sex-ness dyadicity is also another conceptualization that matters, extremes have their proximity. Intersexism/endosexism/perisexism/dyadism is a dualism (to not say it's binarism to not confuse it as gender).
Let's debinarize and deimperialize it all, okay‽