I don't believe that for a moment. Much more likely the complex machines could be simply disabled and their firmware wiped by remote management. This happens with other stuff too, you can't even stealthily move it, because of embedded GPS and the like.

edit: Apart from that, what would that stupid act do to the economy of the involved parties, and the world in general?

It's all interwoven.

Fuck it all, and great reset, or what?