Confirmation bias here, but I find this fascinating. I'm Canadian living in the US, and see these overconfident people who are incompetent in the industry and it drives me banana, but across several previous jobs (again, in the US), everyone seemed completely oblivious to it and thought these people were awesome (they were absolutely not).

In one case, I watched a high executive tank a company into the ground (provably, with numbers to back it up that it was as a direct result of their own decisions) and got promoted 3 times for it. Eventually left their job and took an even higher position at another, bigger company.

No one seems to notice this. Its insane.