No, I don't think so. He certainly has a signature style, but that doesn't make him one dimensional. His filmography is as diverse as it gets.
That still doesn't make any sense. Again, his movies are routinely filled with great and memorable performances. How does he no know anything about acting, if he's constantly getting great performances out of everyone he works with, and every actor comes out with higher stock than they did going in? The man has literally resurrected careers due to the roles he casts people in, and the performances he gets out of them. He knows a thing or two about acting, dude. It's silly to suggest otherwise.