No the grid might function if they actually followed useful recommendations (they aren’t), but none of your devices in your home will work anymore.
get backups of your most critical devices, put in box, then put that box in a box covered in aluminum foil, sealed, no holes in the foil, and protect the foil with aplastic sheet. try to use paper to make sure inner box is not touching any side of the outer box, try to center it in the inner box.