Ah, yes. I do recall this reasoning, and it sounds good. I agree with the possibility of a photo because:
a) PF doesn't appear to be the smartest fella I've ever read about
b) a couple of boys, late teens, burned down a warehouse in my town, and they were taking pictures and sending videos to friends because they were having so much fun.
You are more likely right about this as I've not studied this and you appear to have.
I can't equate a fully grown man who wants to get rid of the mother of his child and murders her with teenagers who lack full frontal lobe development and think it's fun to burn buildings and don't appreciate the consequences of that (due to the lack of frontal lobe development).
He didn't take pictures of the woman he murdered, IMO.
I don't know. I just don't think this case is as complicated as some might think? It just seems to me like a good ol' boy who wanted to get rid of the mother of his child and who asked for help accomplishing the "task" and getting rid of evidence after it was done.
Someone has talked. But there may also be accomplices not yet charged. Or not.