I want to ask

let's ignore the gender names and all stuff. Just a experiment or something like that, so why don't we try to call

a woman : John or Stefan or any manly name

a man : Amelia or Marissa or any feminine name

I'm just curious, like I could go in public and call a girl " hey John, why don't you shave your eyebrows" and same like " hey Amelia, why don't you try swimming in methane lake", I mean I don't see anything wrong with that.

plus how does my name sound like Stefan Eswell Grey.