Polite and velvety leaders, who take care to avoid bruising others, are generally not as effective at forcing change.
Potentially significant, by the way, because we don't know exactly what's in Matt Cooper's notes, and we don't know - and we don't still know the answer to the crucial question of whether it was Rove or somebody else that revealed Valerie Plame's name to him.
History is formed by the people, those who have power and those without power. Each one of us makes history.