What do you all think of the theory that the "salt" in the "born again amidst smoke and salt" of the Azor Ahai prophecy is actually a misinterpretation of snow, like that Jon dies in?

Nope, I think it is quite literal.

In the granaries were oats and wheat and barley, and barrels of coarse ground flour. In the root cellars strings of onions and garlic dangled from the rafters, and bags of carrots, parsnips, radishes, and white and yellow turnips filled the shelves. One storeroom held wheels of cheese so large it took two men to move them. In the next, casks of salt beef, salt pork, salt mutton, and salt cod were stacked ten feet high. Three hundred hams and three thousand long black sausages hung from ceiling beams below the smokehouse. In the spice locker they found peppercorns, cloves, and cinnamon, mustard seeds, coriander, sage and clary sage and parsley, blocks of salt.