Another way to think about it, are you able to tolerate the less than perfect aspect of a job while still being pleasant to coworkers.
A lot of people can’t, and a lot of companies try to avoid those people.
A lot of people can’t, and a lot of companies try to avoid those people.
Conversely, when upper management fucks up, and refuses to take responsibility (for example: admit to making the wrong decision, or even reverse the decision), that's when cynicism runs rampant among the rank and file. And gee, what a surprise, VPs and CEOs try to avoid underlings that speak up about the screw-ups of the brass.
In my experience most companies work with a wide distribution of people. This "we avoid hiring people who have defects" reads as disconnected from reality. Nobody is perfect, and most companies are average and have average people.
I honestly tend to get much better along with cynic people (and find them much more pleasant). In other words: tastes differ.