Along with a lot of the other excellent skeptical commentary here, I'd add that intergenerational time-frames are probably necessary, or at the very least, a great deal of time. Just because you won the lottery doesn't mean you aren't still addicted to crack, or don't have to deal with that idiot relative of yours who is. Just because you won the lottery doesn't mean that your brain has re-trained itself to respond to minor provocations as if they were not existential threats.

Caveat: I haven't read the paper.

But still.