Technically, true, but as the number of dollars in existence approaches infinity, the value of each individual dollar approaches zero.
EMP - hurtful, but nothing we couldn't bounce back from quickly,...
About 8 years ago, a large transformer supplying Phoenix failed; the nearest spare was somewhere in the Pacific Northwest. It was big enough it had to be transported by barge to LA, then on an ultra-heavy-duty truck from there, at about 5 mph. Overall, it tooks several weeks, and nothing else anywhere had failed.
An EMP event over the "Bos-Wash corridor", Chicago or Los Angeles would take months to recover from, even if everything went perfectly, which it never does. Millions of people would be dead, especially if it happened in winter.
Nuclear Weapons - We lost New Orleans to Katrina and barely noticed.
The only value New Orleans (the city) has is as a place to get drunk for Mardi Gras. Nobody is going to nuke New Orleans; they'll nuke a city that has actual utility beyond housing parasites. Come up with a better example.
Could we even get spare components for the electrical grid in the event of a widespread failure? Most of them are most likely manufactured overseas.