If she is correct that studies didn't control for the confounding variables, then a conclusion that there is a "trans brain" is unfounded. Maybe debunked is not precise, and unfounded would have been a better word choice.
I'd also argue it is very relevant to this issue. The more "science" behind MtF trans being like a woman, the stronger the argument that they should be included in woman's sports.
It's funny. Whenever I hear "debunked", it immediately makes me suspicious of anything that comes next. Given everything that's happened since COVID, that's probably the correct reaction. It's been an interesting three years.