but the substitution of “gender†for “sex†has been perpetrated intentionally to obscure the fact that (with extremely rare exceptions of genetic damage) human beings come in two, immutable, sexes.
it’s highly unlikely that the average Joe using ‘gender’ rather than ‘sex’ is doing so with the intent of participating in some devious sociolinguistic plot...
Of course not: he just doesn't know any better.
Most people referring to this Jazz person as "she" don't know any better, either. They're just going along, accepting the feminine "gender" because he has long hair and wears makeup, and ignoring the fact that his sex is immutably male.