I won't put it into precise language at this point. I only want to modify Moonbeam's analysis without throwing it out with the bathwater.
I only have a suspicion that Righties abjure and condemn the so-called "mainstream" sources like MSNBC because the featured newscasters are often vivacious and intelligent women. They assume that because their own sense of being informed and enlightened involves obtaining the inferences of newscasters grounded in fact (or not grounded at all) and accepting them as is, then everybody on the left can also be defined as a lemming such as themselves.
They have a disdain for AOC because she can produce enlightening lectures to an audience as if she were a PhD delivering to a class of 60. This sort of information delivery is too much above your average Trumper. Add sexism, and they are repelled even more for her unwillingness to take a rear seat in the discussion just because she's a woman. And since their understanding of what it means to be "smart" includes facility to contrive and deceive, they suspect any articulate source of information as equivalent in reliability to their favorite and mendacious sources.
This is all part of a wider stream of sentiment, capability and attitude. They always put the cart before the horse, and they always proceed trying to impose their ideological desires on everyone else without regard to the effect it has on others and the limitations on achieving the goals underlying their vision of the world against the actual, "positive" understanding of how the world works, and how the real world is defined in ways that would make their utopian visions unachievable for the greatest number of people.
They might think Caleigh McEnenny is "smart" and point to her Harvard education, but if the attributes of smartness include honesty, this makes both Harvard and Smack-a-ninny stupid. They always overlook The Stupid.
This cerebral crippling infects our political decisions. There are several reasons that our national elections are so close with results of less than a 10% spread, because everyone has normative ideals of "how things should be" which differ, even within political parties. One could almost imagine that the Founders concept of democratic outcomes broadly accommodated subjective things like whether or not candidates are "liked" to one degree or another. But there is no substitute for a criterion of an electorate with something we must call "perfect information". You can elaborate on your own as to what "perfect information" actually means, but let us entertain that it involves the largest accommodation of relevant facts, the most rigorous and unflawed practical inferences made from those facts, and a general commitment to the Truth above all things.
As for this commitment to the Truth. You cannot be a Truth-Seeker unless you assume that the Truth is absolute in its specification, or that at some point the pursuit of facts and earnest inference will lead you invariably to the Truth. If you do not understand these things, if you can't hold the Truth in regard higher in importance than even your patriotic loyalty to your nation-state, then you do not have any asymptote to Perfect Information.
The American Electorate strays far afield in achieving this Perfect Information on both an individual level and a collective or average level. But the Founders knew this even 240 years ago. Perhaps they conceived of representative bodies of Wise Men under the communication limitations of that particular time and era. There was no telegraph. There was no telephone. Something called a railroad was merely in a developmental state. In that case, the partisan influence of constituents upon partisan legislators would be limited, and the imperative of simply representing the largest possible number of citizens in a congressional district could take precedence over adherence to some ideologically-driven party platform. If only people who could craft polished letters posted by US Mail had more than average influence upon the elected leader, the disruptive or unhelpful pressure of the colossally uninformed would be attenuated.
But nobody anticipated the insane frenzy of people whose literacy only found a home in four-line tweets, or who had no concept of deceitful forces (departing from perfect information), nor any idea as to identifying them.
Thus, we find ourselves in America with an All-Time Low in our Leadership Scandals. We cost ourselves enormous sums just for the extra effort needed to ferret out the Truth, the extra activity in investigating real scandals and deliberating over accountability, and the delays in addressing problems just because the least-informed side of the equation refuses to recognize those problems. As example, the difference between attacking the problem of climate change early enough (how about 20 years ago?), and the waste of money and effort over the hyped-up media campaign and so-called "audit" of the Arizona campaign.
The scandals occur in these depraved manifestations in proportion to the confusion of an electorate, unbridled access the misinformation and the ability to communicate and amplify the nonsense through these newly-evolved mechanisms like the internet and the communication platforms arising along with it.