I think this is more about intellectual laziness than stupidity. It's much easier to blame an inanimate object (which you can then delude yourself into thinking you can control) than to confront the reality of evil in fellow human beings. Liberals almost universally refuse to acknowledge evil, except in the most extreme cases, which is why they often describe murderers as being "sick" and other criminals as having made a "mistake."
Denny Crane: "I want two things. First God and then Fox News."
They can't even acknowledge its existence in the most extreme circumstances. I saw a program on PBS once (Yes, I watch PBS occasionally. Please don't hate me!) which had a distinguished jurist (I think it was one of the Supremes) having a discussion with a bunch of young students (late high school or college) and he could not get even one of them to admit that any act (or actor) was evil. He brought up some horrific real life examples, and none of the kids would commit to the word evil.
We might as well lose the word from the language. I wish I had a tape of that show. It would be worth paying money to public television - in this one instance - to get a copy of that program.
P.S. - Mostly, I just watch "New Yankee Workshop" and "Ask This Old House" on PBS. And if anybody knows that Norm Abrams is a flaming liberal, I don't want to hear about it.