If you have an answer to this, then give us a hint. ""In fact we know that it is real, we just don’t know the variables of the weapons, delivery, various electrical systems and at what level, distance, etc. and so on.""
I do have an answer to this... The Koreans have (supposedly) demonstrated that they can get a couple hundred kilogram payload into orbit. That’s only 4% of the 4000 KG needed to cover the U.S. with an EMP event. Since the effect decreases with the square of the distance... Do the math.
In laymen terms, a horse farting on old McDonald’s farm would be about as effective. It would smell bad locally, but not much else.
My background, BTW, is 33 years with HP as an EE, with a first class FCC license.