Earlier quoted context omitted.
"... All transformers are blown. ..." Sure, that's possible. Long powerlines are affected. "... All electronics are fried." What? All? How could that happen due to solar activity? My guess is that even the worst event would leave a ton of working electronics. I don't think mostly anything happens to our cars or laptops, for example.
https://en.wikipedia.org/wiki/Miyake_event
No word about small disconnected devices. I’m guessing they’re going to be fine.