For one thing, our very language is gendered, and unlike other gendered languages, it is only gendered in the specific case of sex. There’s no Las/Los distinction where tables and chairs have gender; it only applies to actual boys, girls, women and men. So, it’s essential to know a little gender identity information, at least, to converse about or with someone.
For another, all the rest of our culture. Marriage, stories, movies, TV, office politics, relationships, dating, family structure, marketing, the law, the military, sports, and almost every single aspect of our culture highly depends on knowing someone’s gender.
You’re like a fish who overlooks the ocean. Or a deep-sea creature that doesn’t notice the pressure. It’s like the folks complaining about politics in sports when they take the soldiers, flag and anthem out of the ballgame. Our society is swimming in gender. There’s no escaping it.
You know, it’s like politics. I see people say it all the time. “No politics!” “Stop making it political!” et cetera. It’s completely oblivious. Saying “no politics” is exactly like saying “no accent”. If you don’t hear it, it’s because it closely aligns with your own. Not because it’s not there. Well, you could say the same thing about gender. Even talking about whether gender is relevant is talking about gender.