Curious if you've seen any of the Cyber Polygon material. I've not parsed through it myself but they've been war gaming this thing for a number of years. And the WEF has been talking more about infrastructural damage than a complete internet shutdown. Their little promo video from a few years ago talks about the necessity in such an event to disconnect all IoT devices. Does that technically include home servers and phones?
https://odysee.com/@Grana:2/2_5195214448654040266:2
Thoughts on this?