My god what an unconstructive stance. I have just now learned about this idea of US exceptionalism, and have just read the linked wikipedia article about it. Apparently it is not supposed to merely be an ineffable magical quality. It is supposed to have some basis in reality. So it can be easily dispelled with a little bit of data. For someone with 3rd level education it should be trivial. Also, purely anecdotal, but several US HN users have responded to me saying they were actually taught this nonsense in their 1st and 2nd level school education.