If this data is correct, then the anecdotal evidence just doesn't add up, and it's simply not the case that people don't have time to do anything other than work, eat some fast food, and then do it all over again.
Advocates for "blue laws" want to impose more laws on shopkeepers. These moral crusaders should instead start by setting a good example, and stop watching football games, ordering pizzas, or filling up on gas on Sunday.
So long as we insist the federal government can force one law, one culture, and one sort of politics on all of America, the US is headed down the road of civil war. Only decentralization and separation can partly defuse the situation.