Some day someone's going to have to explain how that scenario even works, especially on a military level. If the entire Muslim population was hostile to America, our only strategic choices would be surrender or suicide. Roughly a third of the world's population is Muslim -- America has neither the force projection nor resource base to be able to do anything against that. It's just not physically possible.
Capitulation would be literally the only viable military solution available, and it's just not possible to game out a better resolution -- anything else, when put up against a genuinely united worldwide Mulsim population, would end with either destruction or occupation. The numbers are too disparate, and even if you could kill off a sufficient amount to cripple the theoretical Muslim military capability, the economic shocks from losing that much population would absolutely cripple the US -- and everywhere else, of course. Nuclear response would result in the exact same thing -- even if the US went absolutely isolationist, the repercussions from losing that much worldwide population in the sort of timeframe such an act entails would necessarily entail we'd lose most of our own population to economic shock (never mind any retaliation from non Muslim countries for the horrific war crime that would necessarily entail.).
More worrisome than just about any damn thing to me is that we've got military strategists -- even shit poor ones -- that are even considering such a thing as a possibility. It's a theoretical assumption that goes beyond even staggering stupidity into something I can't think of the words to properly describe.