All I'll say to this is that there is a lot of information on this topic that a large part of the population isn't aware of. For example, the concepts of gender expression, identity, and body. There's plenty more to think about and learn, like how this statement above might breakdown when you start talking about someone who is intersex.
I'd say some great places to start might be:
- Understanding Gender: https://www.genderspectrum.org/quick-links/understanding-gen...
- Gender Revolution (Netflix documentary w/ Katie Couric): https://www.netflix.com/title/80186731