The United States Space Command commissioned science educator Bill Nye to produce a video called “Hollywood vs. EMP” so that inaccurate Hollywood fiction would not confuse those who must deal with real EMP events. The video is not available to the general public.
It seems USSPACECOM knows about this fallacy.
-- https://web.archive.org/web/20210507082600/https://en.wikipedia.org/wiki/Nuclear_electromagnetic_pulse#In_fiction_and_popular_culture