I have no issues hiring a DC. But I would
base it on either experience or if you have someone who is unproven, some basis for believing that he has some kind of innovative views on the defensive side of the ball and good managerial experience and vision for the offensive side.
I obviously have no idea how Staley did in his interviews, but he lacked experience and came from a defensive system that— while effective— didn’t reflect anything all that brilliant.