People can deny reality all they want, but EMP is a poor man’s game changer. While I think most estimates and predictions are exaggerated the damage would be catastrophic.
We would be wise to stockpile replacements for key electrical infrastructure (just in case).
“but EMP is a poor man’s game changer.”
EMP is only a theory, propagated more by internet nerds than scientists, and to have a nuclear warhead and the missile to get it into space is far, far from being poor.