Tbh making gender about identity is how we got in this mess. Someone decided that cultural or societal character norms for genders are absolutely fixed and if you don't conform to your genders average characteristic, you might not be the gender you were born as (so if you're a tomboy, you're really a male, if you're a confrontational girl, you're probably male, and if you're an artistic or creative male [like me], you're probably female irl). If you have character that isn't related to either gender than you're something else in the spectrum, whether it be non-conforming or some made up stuff.
The thing is, these rules don't exist. No one said women can't be tough (Spartan women had all the responsibilities of most cultures' males bc all their men were training for war), or men can't cook or be artistic (several famous men are both). Tbh this assumption is one of society's biggest forms of sexism, but bc it's pushing the modern agenda, no one wants to point that out. It also falls apart when you live through multiple cultures and learn what different people expect of each gender. Then you realize that expectations are a human thing and do not determine reality. I don't have to be a big hulking dude to prove my male-hood. The only thing that makes me male is my body.