Grammar has consequences. My grade school still taught, in the 1980s, that words have gender; people have sex. For decades, grammar nerds have bristled at official forms asking whether their “gender” is male or female. It’s like being asked, “What’s your part of speech?”
Somewhere along the line “gender” became a polite substitute for “sex” (perhaps to reduce snickers from adolescent boys). But with sex, gender, and the difference between them now playing into legal and public policy decisions, the confusion of these words means we can barely state the issue. Our gender trouble begins with grammar trouble.