Evolutionary biologist Colin Wright says his cancel culture critics have derailed his career because he refuses to stop saying this: “Male and female are not social constructs, but are real biological categories that do not fall on a spectrum.”
We planted the seeds for this confusion a few decades ago when we started substituting “gender” for “sex.”
Gender is a social construct to some degree. What it means to be a man, or a woman, or gay, or trans, or whatever — varies from culture to culture.
Sex is not a social construct. Sex is a fundamental biological reality.
As with all things in nature, there are weird outliers — e.g., where somebody is XXY. But that doesn’t change the reality of male and female.