I can’t source this because it was decades ago that I read it. All I remember was that one of LBJ’s biographers said that Johnson couldn’t understand why he was not universally loved.
Ditto on McNamara too.
He doesn't often get mentioned with Carter and Obama, but I believe LBJ was one of our worst presidents. Greatly increased our commitment in Vietnam with no strategy for victory, micromanaged the war, and on the home front destroyed black families and vastly increased the welfare state which we still live with today.