Less intelligence can render you immune to a lot of the anti epistemology running around out there. A lot of very stupid ideas take some intelligence to consume.

I like the concept of cognitive miserliness, though I've thought of it as cognitive aversion.

While I'm cognitively compulsive, and expect most people to have a greater aversion to thought than I do, they do seem compulsive in their aversion, paying huge costs to avoid putting out even the most trivial cognitive effort. "No, I don't wanna think, and you can't make me!"

I'd note the guy's "rational analysis of the Jack->Anne->George problem left much to be desired. Just list out the options and test them. Notation matters.

JackM->AnneM->GeorgeNM
JackM->AnneNM->GeorgeNM

Similarly, the bat and ball prices are trivial if you just write out the equation.

The way to be a cognitive miser is the use the right tools and notation. He might have demonstrated effective "mindware" in these problems.

The author also needs to work on his own rationality. The car example is just bad start to finish. You need a lot more information to even estimate net deaths from the car in question.

His gratuitous imposition of his own moral assumptions are worse.

We weigh evidence and make moral judgments with a myside bias that often leads to dysrationalia that is independent of measured intelligence.

Preferring your side is not necessarily dysrational. What rationality has to do with moral judgments is a non trivial topic.