Hardly. Security Experts and planners have been discussing the EMP threat for years.
http://www.heritage.org/homeland-sec...ty-catastrophe
http://www.slate.com/articles/techno...ower_grid.html
https://www.usnews.com/opinion/blogs...the-emp-threat
Over the last 15 years large amounts of US (and by extension Japanese) critical infrastructure has seen analog versions replaced with digital versions that incorporate modern(ish) computers and processors.
The smaller transistors on processors get, the more susceptible they come to charged particles. In fact, over the last 20 years error correction in computing has gone through something of a renaissance because higher density drive platters and ever smaller transistors have even made modern computing technology vulnerable to background cosmic radiation. Yes. A computer error could be as much as a random proton from a supernova 5000 light years away hitting a Hard drive.
This is why, for example, the most used CPU designs for space travel are often PowerPC chips from the early-2000s. Because radiation hardened variants have been developed and the technology (and money) isn't there to harden the newest chips. And these chips cost hundreds of thousands of dollars each.
Modern equipment will simply not function in an environment with a large number of charged particles or things like high powered microwaves.
Our dependence on modern technology that works in ideal conditions is a critical vulnerability. But I mean, you entire posting strategy consists of digging the deepest ditch you can and shoving your head in it, so I'm not surprised you think it's something abstract. It's quite simple really though. Charged particle source + modern technology = no more radios, no more modern cars, no more first responders.