I understand what you are saying and don’t agree, it’s false.
Then you're wrong, and you very clearly don't understand it. It's really very simple:
Sex = a biological characteristic.
Gender = a social construct whereby certain expectations and roles are assigned, often linked to - but not contingent on - biological sex.
This really isn't that hard to get. When you pass a person on the street, you often assign a gender to them based on their appearance, despite the fact that you are yet to investigate that person's anatomy or biology. Every time you do this, it is you assigning GENDER, not sex. We ever do this for inanimate objects. When you look at a Ken doll, you brain associates the doll with male characteristics despite the fact that it is a lump of plastic and has no genitals. You do this becuase you have certain social expectations of how males are generally supposed to look or dress or be presented, and when you see those characteristics you assign a GENDER IDENTITY using that input.
It's how you're able to decipher that Homer Simpson - a drawing on celluloid with no biological characteristics whatsoever - is a man, and his wife, Marge is a woman. If you are able to assign gender roles to cartoon characters, you must admit that gender is NOT purely biological, but is entirely divorced from biology.
Biology determines whether a person is male or female and our society doesn’t understand that there is a wide spectrum as far as social construct of male or a female and what that means to be a man or woman.
What society understands doesn't change the facts. Sex and gender are different things, and biology does not determine gender. These are scientific facts.
Just because a boy doesn’t like sports and is more sensitive or artistic doesn’t make him any less male.
Correct. Why would it?