Aside from the standing up to do the fighting, that's because of his sex, not so much his gender. Sex = male/female. Gender = masculine/feminine.
Good point. The word "gender" is not properly applied to people, but to words. Mostly, it's a consideration in languages other than English. Amicitia, is Latin for "friendship," and is a noun of feminine gender—you can recognize it as feminine by its ending, since most Latin words ending in "a" are feminine.
Homosexuals, and the people who are beholden to them as part of the Lefty pantheon of victims, such as academics and journalists, have started using the word "gender" to apply to people, to avoid saying the word "sex." For them, this is in obedience to a whole feminist-homosexual-rights theory that sex is not a profound distinction—as if maleness or femaleness were something that you could choose or alter with a thought or a keystroke, like the ending of a word.
This notion, called "Gender Theory," is a little shared lie that grew out of a desire to protect psychologically wounded people from any obligation to deal with their problems adjusting to the world outside themselves. This brand of reality-avoidance has metastasized into a political agenda. The agenda encompasses things like an attachment to abortion—because women "need" to be able to kill the evidence that their sex is the one that gets pregnant—and bizarre "speech codes"—to prevent others from telling inconvenient truths about normal sexual behavior, marriage, and children. As the writer of the article excerpted shows, the agenda also encompasses a hatred for husbands and fathers—the men who offend the "gender"-benders by performing duties as unique to their sex as child-bearing is to women. Gender-benders are always trying to find ways to dismiss marriage as rape and wife-beating.
In the name of truth, literacy, freedom, and psychological health, let us avoid asking "gender" to perform tasks of which only "sex" is capable.
Far as I’m concerned gender is about pronouns, but I used his lingo to be polite.