These are worrisome stories, to be sure. But coaches sometimes do learn from their experiences and improve over time.
I used to be almost as big a Browns fan as I am a Bills fan and remember when Belichick was there. There were stories in Brownie Land about his grumpy, dictatorial style not be conducive to winning. So much for initial impressions.
If it is Childress, let's hope he's learned a little about leadership working under Reid, as well as X's and O's.