Theodore Sturgeon, one of the leading lights of the golden age of science fiction, was at a convention when he was buttonholed by an angry, pugnacious would-be literary critic. The guy got about eight inches from Sturgeon's face and declared, defiantly, "Ninety percent of science fiction is crap!"
Without missing a beat, Sturgeon quietly and calmly replied, "Of course. Ninety percent of everything is crap."
One can debate what constitutes the correct percentage, but the incident illustrates a universal rule. Whether we're talking about doctors, lawyers, auto mechanics, computer programmers—or CDEs—there will always be a bell curve with good ones, bad ones, and the great mass of "ordinary" ones. It's true of all professions in all times and places.
Point being, you got a CDE who doesn't fit your needs. Keep looking. As Sam says, they're out there.