Dabo is a great example of a guy with a refusal to change and adapt that is going to destroy him. Beamer was an example of the destructive cronyarchy. They had lots of talent for years and great defenses and everything was a horrible slog because he insisted on keeping Stinespring at OC forever and ever.
I started to say that his play design wasn't horrible, just his player usage and situational play selection, but his play design was also horrible and my brain chose to forget. He was very fond of screen passes to receivers who didn't actually have blocking screens. Or who had one blocker to 2 or (INFURIATINGLY since it meant something has to be open elsewhere) 3 DBs. He did this every game for years and Beamer watched it and thought "well shucks I can't tell my buddy he's stupid"
And you always knew when it was coming! There was specific spacings and formations for those plays. Friends and I would joke "ah shit it's time for the 3 yard loss play" when they lined up. Eddie Royal would do some freakish thing twice a year to turn a loss into a first down and Stinespring just always kept those five instances in his mind as proof it's wise