SEATTLE — Bo Nix became Boo Nix. He was not the Brees Knees. None of this was particularly surprising given the time and place. Rookie quarterbacks are now 4-15 at Lumen Field. And in his debut, Nix looked spooked and was too often off target before providing hope with a nervy fourth-quarter drive that made the final score more palatable. It was unsettling but predictable and understandable. What was not was Sean Payton’s performance.