In a sense, you are right that the title is meaningless, and only means signature powers.
And you are right that other principals rewrote legacy stuff. But I also participated at the same level. I just knew I was only above due to some market luck lining up with my experience. Will never know exactly how much influence I had over that situation.
But I have a Jazz background. It is easy for me to respect equally everyone on the team. Sports can do the same, but I think music is probably more effective, because it is inherently more spectator than competitive. Musicians tend to make incredible team players, if they stuck with it for long enough. Many leaders in band are leaders in sports, in school. And the formal language abilities are already demonstrated in musicians.
Well, that went in a strange direction.