Randall Munroe of xkcd has a better "definition" when it comes to defining what makes American America:
Regardless, I back his decision. It's his restaurant, and he can serve what condiments as he wishes. As my mother taught me in matters of cooking: make it the way the reciepe says the first time, and after that you can play around with it. If it tastes good with the sauce it is given, why add more?
I'll tell you this much: there's no ketchup or catsup in my kitchen, and I'm not of the "backwards" or "behind the times" 3 percent that still uses dial-up internet as The Wire seems to correlate with non-ketchup keepers.