I could agree, except that some definitions are too simplistic.
For instance, the definition of sex - "either of the two main categories (male and female) into which humans and most other living things are divided on the basis of their reproductive functions".
does not take into account the problems of ambiguity.
And therefore, the assignment of sex is often a poor choice between two options. There is no "undecided" option, nor a "wait and see" option.
In nearly all other walks of life, we explore all the options, but in the assignment of sex, the choice is too limited, the decision often left to a simple visual inspection, and time constrained.
For instance, in politics we aren't constrained by a choice of just two options, in a choice of holidays we have a whole range of options, in a choice of cars we're spoiled for choice.
But in the choice of a sex of a newly born infant, we're constrained by the choice of two options, and we're required to make that choice within a short period of time.