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?
Material conditions determine political ideology. In this case, STEM (though really just T and maybe E) educations generally grant those who obtain them easy money and an avenue into the professional class. They view capitalism as fair because it worked/is working for them, and then have to work backwards to justify how a fair system can have systemically marginalized groups. This way leads to liberal racism at best, to fascism at worst.