Like you might think that abstract intelligence and social intelligence might carry over solidarity instead of making people more shitty in that regard. How does that even work? Why does people like that coast in life while those who they seem lesser than them suffer?
A culture of superiority to others has been built around stem. It is the same culture of superiority to others that the bourgeoisie have built around themselves.
Solidarity is unlikely among people that are pleased with being top of a hierarchy.