I think Sunny 16 is a really good tool. It IS accurate. Nobody can argue that.
But at the same time - it doesn't really matter. If you have a way of shooting that works, whether it's with a meter or without - why would it matter, as long as you get what you want? And I'm a strong believer in repeatedly using the same thing, because practice makes perfect, not gadgets and gizmos, or the lack thereof.