To be fair, I don't know that there's always hatred involved. But otherwise, yeah, the person who intensively studied for decades to wield magical power will generally look down upon those who were gifted with it at birth, don't entirely know how it works, and are generally not as intelligent or as skilled (be they sorcerers or warlocks, either).

I want to know what the occasional Ultimate Magus (sorcerer/wizard) thinks on the subject.