‘I never said anything close to that. Try to pay attention. What I said is that a person's brain is also part of determining their gender. Or did you think men and women have no differences at all in brain makeup and chemistry?’
A person’s brain is not part of determining their gender in any way whatsoever. There are differences between men and women (the only two genders) in brain makeup and chemistry, but it is the reproductive organs that tell us which of the two genders you are. You cannot choose your gender. Only God (or to atheists: your genetic makeup) can decide your gender.