Well, were talking about it, so doesn't that mean that as art and entertainment, he has already succeeded? As a study of PTSD proper, I am about as far away from convinced as I can be, but it is interesting, and the results could be enlightening, if not necessarily in regards to the disorder. So rock on, crazy artist man.
Also, he should totally just go insane and make a point of collecting as much, "Dirty Sickfly Filth" as he can. Yes, that's a real item in the game. It's not just filth, its DIRTY filth. As opposed to normal filth, which is also in the game. For contrast.