I think a good photographer is a person who knows how to handle a camera well, also have a creative eye, and able to tell a story through his pictures. A good photographer should be able to capture what he/she wants to capture, and to present the final form he/she wants, being able to envision the final product (with or without PP) even before he/she hits the shutter.
It is not about the differences between the RAW picture and the final product. Look at the popular technique called "exposing to the right". The technique involves purposely overexposing a scene while not blowing the highlights. Then taking the RAW file, pull back the exposure in PP. This will enable the sensor to capture a lot more details in the shadow areas than just shooting at "proper" exposure and trying to lift the shadows later. The key is what the photographer have in mind as the end product. And the ability to use all tools and techniques available to him/her to get to that vision of the end product.
A person who snaps away like a machine gun without forethought, and picks out pictures that he thinks can make it, crop like hell, process like hell to make it presentable. That person is not a good photographer.
But then again... aren't we allowed to be 'bad' once in a while? Kick back and just shoot like a newbie just for the fun of it.