I don't want to hijack the thread, but please remember that I merely gave my opinion. I believe that this kind of subject comes over more powerfully when the drama doesn't come from a Photoshop technique but directly from the human in front of the camera. Dorothea Lange had Francis Bacon's words up on her wall: "The contemplation of things as they are, without error or confusion, without substitution or imposture, is in itself a nobler thing than a whole harvest of invention." I may be in the minority, but that doesn't make my opinion any less valid, surely? I find the idea that 'most viewers would not realize that anything was done at all' rather disheartening if it were true.
Regarding the attitude of other experienced photographers: well they are likely to know that this is a much debated topic among documentary photographers and photojournalists, with many nuances and much left to the individual's personal judgement and values. It is not a facile 'postprocessing or no postprocessing' dividing line.
In Parkerman's own words: "The edit makes him look more aged..."
I'll reiterate - I am only giving my opinion on how this photo could be improved, not making rules or criticizing Parkerman. He's free to do whatever he wants.
Best,
Helen