1. - Possibly, though I doubt they are great in number.
2. - Absolutely. Most Americans do believe America is superior, and the "best country on earth." And they are factually wrong by nearly every single metric there is.
They are using the wrong word, then. That is not really a matter of pride. And if it is true pride, then they are claiming unearned and irrelevant factors as sources of pride.
First, I think you're extrapolating that definition too far. The original definition, which revolves around self-respect, is exactly why I don't have national pride. There is no aspect of "myself" that has anything to do with the existence of America. And I think extrapolating that onto the nation is a huge leap that is well outside the parameters of that definition.Pride can also be defined as a reasonable or justifiable self-respect. Therefore national pride can be a reasonable or justifiable respect for your nation. So, by that definition, would you say you feel national pride?
But, accepting it for the sake of argument, still not really. To me, this implies a respect of law - and frankly I respect common sense more than I respect law, no matter where I am. I just don't pay much attention to rule of law if I think it is unjust. My standards remain consistent no matter what country I am talking about. Realistic adjustments of expectation may apply depending on the real situation of a given country, but that's it. And I don't think America is special in any way. It has certain aspects in which it is somewhat unique, but so does every other country. Every human is different too, and yet that doesn't make one inherently more important or better than another.