it doesn't prove anything.
pretty much all he's saying is people who are low income are less intelligent and their children are more likely to follow their beliefs.
and even if it is proven that religion is a genetic trait who's to say God had nothing to do with it? the bible says he created us so it is logical to assume he would make some sort of genetic trait for us to try to find him.
I think he is less intelligent for shoving his head up his ass than tootin his own horn.
i'm not an athiest but I am not a church goer. about an hour is all i can take of the "Good News" than its time for a smoke and walk to the truck.