Bah. A good photographer can take photos with just about anything. A good photographer -- film or digital -- does postprocessing too. A good photographer may be taking pictures with a point-and-shoot camera with crappy dynamic range, and need to take three pictures at different f-stop settings, then use the "curves" feature to compress them. A good photographer may be at a once-in-a-lifetime site/event, and find the background to be far brighter than the subject, and a lot of dead digital space in between, and might find it prudent to "cut out the middle" of the picture.
A good photographer might have a couple of hot pixels that need to be mapped out.
A good photographer might take a picture in RAW format and need to set the levels individually and by sector.
And yes, good photographers take tons and tons of pictures, analyze them for ways to improve them, and very few of them make it all the way to the "finished" stage.
There's no substitute for being a good photographer: you can't "add in" composition or image data later. But processing with PS allows you to maximize the impact of the photographs taken. It's called workflow, and there's room for skill and artistry at every stage.
