>Regardless of sex chromosome aneuploidies or a desire to be the opposite sex, everyone who is, who could be, or who has ever been pregnant is female.

Nature disagrees with you. There are many animals out there that can change sex. Sex, gender, etc etc don't have a perfect universal definition because nature doesn't work that way. The scientific literature is trying to capture the observed variety we see in humans and it will continue to evolve as our understanding evolves.

This whole line of argument reminds me of the history of pi and the governments that tried to legislate it to fixed values. Just because you want things to be simple doesn't mean that reality backs you up.