Except that he's the one who interviews and hires the unspectacular help.
I've been in management a long time for different companies and I know his type. It's common. He's insecure and doesn't want to hire anyone who is smarter than him or who might challenge his decisions. That's why almost every assistant he's hired over the last 18 years was either a buddy or someone he worked with before.
Todd Haley was hired by Dan Rooney.
His last couple OC's were buddies and were so bad that he HAD to look outside the box and hire Art Smith.
He hired Flores to do a friend a solid (Flores did get screwed by the Fins), the smart move would have been to make him DC but he would have wanted to do things his way and might be smarter than Shades. Last I looked, the Vikings' defense was pretty good.
No potential GOOD DC would want the job because it's widely known that Shades runs the D so all you're going to get is borderline qualified second bananas like Austin.