They are getting at the point that as animals we can intellectualize all we want and will still have biological characteristics that fundamentally influence our behavior and culture.
I suspected as such. In my life, I've often heard this point trotted out to justify "Why men/women are good/bad at X thing", which is why I was asking what they were getting at, specifically. Even if they weren't getting at that, their comment doesn't add much by itself.