So to reply to both of you at once.
There is no such thing as a male or female brain when it comes to biological differences.
Things like identity, personality, beliefs/faith and so on to include the belief in the concept of gender and feelings of gender are individual.
Why we are who we are…despite all being humans with the same physiology…is the subject of much philosophical debate. Are infants blank slates and therefore their identity and personality is a result of the sum of all their early life experiences? Or is there a spirit or soul type of energy to our consciousness that for lack of better word inhabits the body and that is the source?
I don’t know all of gender ideology, much of it I view as a new sort of religion or faith. But yes, if they think the brain is gendered that is not possible. Minds can be gendered, but the brain as in the organ is not.
I have no issue with people being transgender and wanting to live as the opposite sex. That’s not the issue. The issue to my mind is predators pretending to be transgender when they are not to secure preferential treatment. It’s the wolf in sheep’s clothing phenomenon that I suspect is going on with the current spate of sex offender convictions of mostly paedophiles deciding post arrest they are trans. It’s too convenient, too coincidental, and is a departure from the studies on criminal offending.
I think self-ID is driving it to be honest. I know it’s a real pain in the arse for transgender people to transition and many activists want self-ID but I think sorry convenience for any group (transgender) should not outweigh the safety of any other group (women and children). It’s a greater good question.