Perhaps as the only real progressive I know, I can help you understand what a progressive is and why you fancy them having a high opinion of their intellect, or perhaps only a low opinion of the intellect of those who do not think like them:
A progressive is a person, first of all, who has died to his social programming, who has escaped the normalcy herd mentality that imprisons the minds of most people on the right and the left. A progressive is somebody who has access, mentally, to both hemispheres of the brain, a person who can reason in great depth analytically by logic, but also instantly grasps the patterns in the big picture.
This capacity to use ones whole brain have been beaten out of most people by fear, the terror of being seen by others as being odd or different. It's not a place for the lily-livered. Progressives are people who sail into the monsters that swim at the edge of the know world, people of the deep. Such people are terrifying to people who have never examined themselves.
You understand, I would imagine, the conditioning process called Whack-A-Mole, the conforming deadening process that beats back any attempt by anybody to raise his head. The progressive is the person who walks with his head up through a sea of the dead.
Mostly, a progressive is a liberal and a conservative in the sense that he or she sees the reality behind each position, that opposites integrate at a higher level of understanding. A progressive is basically somebody who understands more than most people will ever imagine.
The problem that humanity's ego has in dealing with the progressive is that the progressive's superiority consists of the fact that the inferior project their own sickening egotism on people who really are superior but think nothing at all of it. The sickness of the ego is that it needs to feel superior to others. That is what ego is. But progressives are made when a person dies to that ego. But who but the progressive can know the difference between being an egotist and being ego liberated. Only the progressive can drop things before swine and know what to call them. Raindrops built the Grand Canyon, no?
There is but one truth and it covers all. And it's nice to know it.
Everywhere a progressive looks, he sees his or her Beloved.