Once again you elaborately shuffle dance around a very, very simple question, and ask a question of your own. I'm not interested in why he might (hypthetically) play with body parts if not photographing them. It doesnt matter. There could be many reasons, none of them, including photographing them, being acceptable.
I have seen some (certainly not all) work by all the above photographers and while it may not be my cup of tea none of it is in the same class as JPW. Some people document the real horrors of life. JPW, in his corpse work, creates them, his photography IS THE EVENT!
But I think I understand why you defend his work now. You are somehow detaching the photographing of the event from the event itself. But he is not documenting, he is actively CAUSING, CREATING the thing. His horrific little horrors do not exist without him, and they involve the disrespectful abuse of human remains. Imagine a family member, or friend who stumbles across a photo of their loved one in a JPW photo. Do you not get it? Do you think that is somehow OK? It would be different if he were documenting what some other sicko had done with corpses, but he is the sicko. You somehow overlook that, and think he is just making a statement about it. No, HE IS IT!
BTW, it matters little to me whether he is engaged in some other, even "worse" behaviors. You seem to think I believe that he is, but that hasnt even crossed my mind. The reason for that is nothing else he could do would be worse than what he already does. He cant sink any lower in my mind.