By efficient, he means picking his spots better. Kobe is way too old for the psycho bean 25+ shots nights. The last couple of years, Paul Pierce did a hell of a job of switching from ISO, post ups and driving to the lane to a more perimeter, only shoot when you're open/hot game. Paul Pierce would takeover games, now he let's the game come to him.
I don't think Kobe can emulate that though because Paul Pierce has had decent players around him to take the load off. Rondo, KG, Green, JJ and D Will makes it a lot easier to pick your spots. Kobe doesn't have the help to emulate how Pierce picks his spots.