hiring practices...
hmmmm
back in the good old days when you had to actually have a few hours (more than 1500) to even get an interview, may pilots had to INSTRUCT to get flying time.
And those instructors learned (sometimes the hard way) how to speak up when things were going badly...and to take control in order to stay alive.
those skills transferred well to the airline cockpit. now, many captain fly just fine and never need someone to speak up...but once in awhile we all screw up a bit and the diplomatic, former instructor, knew how to get things back with the right turn of a phrase.
You didn't keep students(and therefore monetary income) when you slapped their hands, or yelled at them...but a quiet...hey frank, you're a little slow there, usually would bring things back to the good. Lindbergh himself said (paraphrase) that you never really knew HOW to fly, untill you could teach someone else how to fly.
Sadly, many have not had the experience of being an instructor.