Here, people view not believing in God with higher intelligence. That is because they really feel inadequate to deal with life out of the WTS.
This comment may be the definition of non-sequiteur.
It may be worth noting that the board is not exclusively American, although the percentage of atheists may be that low in America (although I doubt it) it is not true of other western countries which have a much higher number of atheists.
I dont think that 90% here are atheists, although it might seem that way sometimes.