You identify as a man. You were born a man and have always outwardly displayed masculine characteristics. You are in a room with 100 people, and they collectively decide against your will that you are a masculine female and treat you as such.

Are you now a girl because the collective has decided that? Or are you still a man because that's what you have always identified as?

Before you say "100 people does not make a society," the number of people who decide that is irrelevant. Additionally, the reason 'why' they decide you are female is also, according to your logic, irrelevant. It just matters that they all agree.

You still think that gender is imposed on you by society?