During my interview (which I was successful in) I got the distinct impression that these irrelevant factors were really a personality test.
They ask a scenario based question and you tell them you’re going to be calm cool and collected. OK, let’s test that by pretending his poor high school grades might cost him this job. Let’s get in his face about it just a little bit and see if he gets uptight, defensive, etc. Let’s be just a little condescending and aggressive in our questioning of his shortcomings and past failures to see if we can get him to become emotional. If he can keep his cool during the most important interview of his career, he can probably keep his cool when some minor emergency occurs or when dealing with difficult coworkers.
It really felt like they cared about the actual answer very little. They were really observing how I answered things.
I think as pilots we are so literal so much of the time that we sometimes forget to pick up on the subtext of what is actually being said.