Digital image manipulation is a separate art form. Graphic artists had to learn digital image manipulation or retire. Commercial photographers are going the same route. Photographers who have opted for that route for various reasons are defensive because they realize they are orphans of both photography & graphic arts. The realism for which they strived as photographers is under-cut by the ease with which their tools can alter that original vision. Today, they merely clean-up after sloppy technique, tomorrow they clone 2 images together to get a better effect, and the next day the original vision is sub-sumed into a fantasy world.
Instead of trying to pull photography into their digital world, they should embrace graphic artistry.