(HatTip: Andrew Sullivan)
I'm willing to accept the explanation with some good humored reserve. However, the question would then be, why did the Haredim keep wearing hats? the easy and immediate answer would be - because Haredim as a social group drive less cars. This is actually factually true, though not really a likely explanation. The true answer would probably be, the Haredim still wear hats because the rest of us don't.