They just can't handle the idea that sometimes being utterly stupid ends up being fatally stupid.
I'd take it a step farther.
Without putting too fine a point on it, I have some aquaintences, who are very much DUmmies in behavior though not what I'd call political. The entire family, in fact. The brothers, the father, and the wives. They complain all the time that they're broke. Complain all the time that they have problem after problem crop up in their lives, and generally blame others for their failures and problems. They'll milk any government program they can for all its worth, up to and including leaving the state to go to another state to birth a child. Keep them in mind for a minute.
Every truly functional adult human being has a process when it comes to making decisions. Regardless of what criteria an individual uses in making a decision, the functional adult considers the ramifications of any potential decision. A truly functional adult is able to "rewind and replay" past decisions and see where they led, and is able in real time, to rewind and replay
potential decisions as a means of both avoiding negative or unwanted outcomes, and ensuring a targeted or desired outcome.
This ability, call it whatever you want, the the family I described above and the DUmmies both lack it completely.
Combine that with a heavy does of DUnning-Kruger, and you get "the worlds smartest people", who are always right and never responsible:
The Dunning–Kruger effect is a cognitive bias wherein relatively unskilled individuals suffer from illusory superiority, mistakenly assessing their ability to be much higher than is accurate. The bias was first experimentally observed by David Dunning and Justin Kruger of Cornell University in 1999. Dunning and Kruger attributed the bias to the metacognitive inability of the unskilled to recognize their own ineptitude and evaluate their own ability accurately.
https://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
Those RL folks I spoke of, they're like watching a train wreck that just keeps wrecking and wrecking, and you can see it coming a long ways off before it even begins, over and over and over. Same with the DUmmies. With that family, its become entertaining to watch them self inflict troubles problems and costs on themselves. The wife and I joke about it, that if theres a worst possible way to make a decision, they'll take it, and if there isn't, they'll invent one that is.
But with the DUmmies, they want to inflict their stupidity on the rest of us, and that ain't funny.

to the bunch of them.
CMD