I think the point is, is that you should be using the tools you have available to you to their full advantages. If you can get the most out of using a histogram, then do it. If you get the most from using the light meter in the camera, then do it. If you get the most out of using an external light meter, then do that. Or, a combination of several things. I still don’t feel that any sort of automatic mode on the camera is going to allow you to get the exposure the best if you are leaving it up to the camera to do it. We should all be skilled enough to define the functions the camera is using to get the best image.