LOL - Build away, DE.
I have ALWAYS challenged the 'experts' - and will continue to do so.
Science is NOT determined by 'consenus', and my education in physics is solid.
There have already been high-altitude tests with multi-megaton devices. Ya might wanna actually READ about, and contemplate the actual 'experimental' results on the damage.
Today's doomsday EMP scenarios are way overblown. The evidence of actual experience supports that conclusion.