It might, but a professor should know about things like cause, correlation, and such. This kind of speculation doesn't help the argument at all. If there are differences in physiology that could explain inclinations to areas of knowledge, the assessment and analysis must be fathoms deeper than what he offers here.
If you agree with his thesis, even, he's doing it a disservice by presenting it with only surface level evidence.
He references studies in the research literature. He has a PhD in clinical psychology, he's not making stuff up. I'm not sure he references physiology, but he does talk about the nature vs nuture debate a bit if I recall. His focus is on career preference.
You're asking him for evidence but you keep making up things he supposedly says without evidence. If your opinions of him are based on what twitter says about him rather than what he actually says then i'm not interested in that convo.