This doesn't make much sense. How did fans know Wendel Clark, Dougie Gilmour, Bobby Clarke, Wayne Gretzky, Mario Lemieux, Steve Yzerman, and Mark Messier were great leaders? It was visible in their play, the way they handled their business, and the way they performed in the face of adversity, confrontation, and high stakes.
Let's say we want to claim we don't know about Matthews' covert, amazing, and inspirational pep talks in the room, the fact that we've blown Game 7s, lost to inferior talent, and have come up small for 7 years in the playoffs, is a clear indication that Matthews lacks the ability to lead. So does his significant PPG dip in the playoffs (0.88 PPG). If any situation proves what type of leader a player is, it's the playoffs, especially in a hockey market like Toronto.
The ^ are tangibles that we can easily and fairly observe, as well as post game pressers, contract dealings, public statements, and public appearances. In all cases, Matthews has shown zero leadership qualities. So, I guess we can pretend that he's secretly Jean Beliveau incarnate, but the results and his ho-hum approach to losing say otherwise.
All of that said, it's fine. Matthews isn't a leader. It's not in his DNA. The same could be said about some very talented players such as Tavares, Lindros, Nash, Thornton, etc. Not all players have the heart of a lion like Gilmour. But we need to at least be honest about it when we evaluate Matthews as a player after annual disappointments.