I agree with you. There are generally speaking two goals of corrective photo manipulation. One is compensating for the limitations of the camera - i.e. perhaps

I agree with you. There are generally speaking two goals of corrective photo manipulation. One is compensating for the limitations of the camera - i.e. perhaps you underexposed to capture motion and then changed the levels to make the photo look closer to what you saw. The other is compensating for the limitations of the scene - i.e. using a long exposure to capture something that's unseen to the human eye. Based on the example photos I think he's doing the latter.