I'm gonna have to go out on a limb and say that OP would need some evidence to convince me that engineers are more arrogant than VC. As opposed to no evidence at all.

This, after all, is a guy who works for pmarca, who, having achieved the status of "rich white person", went on to posit in public that the end of colonialism was bad for India: "Anti-colonialism has been economically catastrophic for the Indian people for decades." It's possible there were some nuances he was missing.