It's massively complex once you start digging down into the details, and the bulk of it really is unknown. I used to work in biomedical research and the enormity of just how much we don't know became more apparent the more I learned about the topic.

That said, I agree with you on how nonsensical gender ideology is. I find it particularly irksome because of how unscientific the whole thing is, there is a huge amount of bullshit being passed off as facts.