This irks me a bit. Matthews were talking about the players on the ice, saying they got outworked and outsmarted. They were outsmarted because we kept forcing the same kind of plays that didn't work. Matthews himself was one of them, constantly trying to walk in for a shot that they took away instead of adapting to how the game looked.
People are acting like any hint of criticism towards decision-making has to be on the coaches, but that's pretty absurd. The players aren't just mindless drones who carry out the coaching staffs orders. There's tactical directives, and there's on-ice decisions. Matthews was clearly referring to the latter.