2. Likewise, understand that you are not an expert on this subject matter. Most cis people have a lot of learning to do on the basics of gender as applied to living in real life. If something seems weird and bizarre, it is most likely because you're the equivalent of a 3rd grader reading about calculus. You lack the context to make sense of it, rather than the thing itself being absurd and worthy of ridicule.
Here comes a simple problem. We don't even have a unified definition of the word "gender"
I regularly encounter variations of 4 major definitions.
1) Gender is exactly the same thing as sex but when talking about humans. It is binary. Can be either male or female.
2) Gender is a biochemically determined behavioral pattern that usually matches sex but not always. It is also a spectrum. Can be male, female, both(or neither).
3) Gender is (quoting WHO) characteristics of women, men, girls and boys that are socially constructed. This includes norms, behaviors and roles associated with being a woman, man, girl or boy, as well as relationships with each other.
4) Gender is an internal feeling of being X. Usually it is male or female but can be both, neither, fluid, and more.
My problem is... those 4 are absolutely incompatible. Words stop functioning when different people assign different meanings to them. I am at the point where if someone will ask me what gender is, I'll shrug, this word is becoming meaningless (and when answering a stranger whatever answer I may choose, someone WILL be insulted and call me a bigot, narrow-minded, satanist, pervert, leftists, etc.)