Reporter said grey, he said grey and white.
But I'll also add that there's a phenotype of autism where the brain is larger. Interestingly only in males.
I do know that the main point Gina is making in her book is the impact of this research on other things, one of which obviously is the trans and gender stereotypes debate.
The thing is brain plasticity is so individual how can we ever take account of individual experiences? For example, trauma increases the size of the amygdala, mindfulness has been shown physically to reduce it. Some individuals are more sensitive to stress. Cosleeping positively impacts young boys more than girls in terms of emotional regulation - is it the stereotypes you're correcting there (be a hard tough man) or is the young male brain more predisposed to stress?
I don't think it can ever be black and white. Or pink and blue. The main argument Gina puts forward is how much A gendered world impacts and creates a gendered brain.