Nope you are taking that part out of context. I'm saying he killed because he wanted to kill/ make victims suffer. I never said his IQ was high. I put the pure sadistic nature of his actions in to the contrast of actions taken out of neccesity to survive when someone is desperate.

I compare his actions with serial killers and find them different from crimes out of poverty.

As for prevention, it could or maybe could not work.
Maybe he was simply of sadistic nature regardless of his IQ. We could say that every murder, every crime, any wrongdoing could have been prevented and take a blame for them all. It's kinda true but also not.

My point is that OP meme seems to indicate sociaity was at fault i say killer is at fault. Which you seem to agree as well.