I would see PP - including photoshop, NC, etc - as a whole different set of courseware. Likewise, printing would probably more appropriately fit within this region.
Consider that on the one hand we have the making of the image - getting something that we see into the camera, and doing so so that our digital negative is of the best possible quality.
And on the other hand we have the post-processing of that digital negative, be that using
PS, NC, whatever, and preparing it for display, either by printing, web display, or whatever, and given that the digitial negative might be in great shape, or like me.
I know that I'm always reminding Leigh to, with his silver halide images, to ensure that he gets the best possible negativbe he can. if the negative is good, then you have a far better chance of pulling a good photo from it. But if the neg is too thin, too dense, or lacks an effective contrast range, you're only making the task of getting that great image just that much more difficult for yourself.
In this regard, there is nothing much that is different when it comes to digital photography, and it's our knowledge of the basic techniques - exposure, lighting, composition, even just how to hold the camera properly and how to release the shutter smoothly - that all contribute to the quality of our negatives, be they halide or digital.