Doesn't surpise me a bit.
Though it might represent the internet city types more accurately than the average populace across the country.
Of course, then again some folks don't consider that they have food and water stored in the house all the time are really "prepared".
One would need to define what qualified as "prepared". Because those that have BOB's, long term storage food and water in drums is gonna be a smaller percentage than 24%.
Its a sad commentary on our society.