It's not that it's biggest hurdle, but yet another hurdle. Not sure how ya all like it, but I prefer to have the least amount of hurdles.
Also, titties + 2 slots = woman. No tities or barely titties, slot and plug = man. Anything between? Not counting till they finish.
Best way to live in a community where such weird and offputting things are hapenning like, dunno, people trying to determine and know themselves is to simply ignore a problem. They have pronouns? WELL now I ain't gonna use anything that requires using them! >:(
Edit: First of all, this post was me taking a piss and talking from the other side. And now I have a problem. On one hand, people possibly didn't get it. Happens, written medium and all that. But then, why 9 people liked this. So I hope people got it and just thought not funny/not worth it/ragebait.
Who are you to tell anyone whether they are a man or a woman? What gives you the right to tell someone else who they are? What even business is it of yours?
I'd say it's best to be in a community where people respect each other's identities. But your mileage may vary.
So flat chested women are not women? Or women with XY chromosomes but no vagina (yes that's a thing) are not women? What about those born without a butt hole? What does that make them? Or if someone gets a sex change and now match your definition?