Mistwell
Crusty Old Meatwad
You do know that the person leading the design for 3.0 was not Monte Cook? The original lead was Peter Adkison. When Adkison left the design team, he appointed Jonathan Tweet as lead designer (Skip Williams, "A Talk with Skip Williams" at montecook.com). This is further supported at the 13th Age page at Pelgrane Press in which Tweet states that he was the 3e lead designer.
I think he is referring to Monte Cook speaking at quite some length, repeatedly, about how he intentionally supported System Mastery benefits in 3e for players who with experienced achieved more system mastery over the game.