If you shoot JPG the camera adjusts your image data for you. If you shoot raw you need to adjust your image data and save it to a format that can be viewed by others easily and printed.
Typically the negative side of this debate is stirred by someone with a lot of film experience (note that I didn't say darkroom) and that is relatively new to digital photography. They hold on to some kind of misguided ideal that somehow film is better than digital. That's no different than saying "my camera took a really nice picture.
"Once you alter the image using something other than light, you are doing graphic arts, not photography"
:cool: The image is light. It was created with light. It was painted on your eye with light. It was modified in the place it exists by light. Photography is a recording of light and the subtle differences in hue, contrast, and saturation across a very narrow electromagnetic spectrum. Light is recorded by a sensor or the negative. It's transferred from the negative to the positive with light. It's transferred from the sensor to the memory card and on to the computer with electromagnetic energy, which is just another form of what we call light. The entire process, no matter which one you choose, is about light.
If you want to be a purist about photography, buy a bunch of darkroom equipment and go back to shooting film.
Don't tell anyone but you'll be manipulating the image there. If you don't you may as well get your prints done at Walmart
I would surmise that they have little to no darkroom experience otherwise they wouldn't speak negatively about "manipulating" an image.