My gas powered car can go about 160 miles on half a tank of gas (which is about the average amount I have in it at any time). If I had an EV, I'd charge it overnight, so I'd have 200 - 300 miles of range in the event of a power outage.
So it leads to the case where hundreds of thousands of people have no power at home, but often a short distance away (like maybe where they work), the power is fine.
That said, I mentioned these things because it's a should. I'm compassionate for those in that unfortunate situation.
I don't know about how the distance scales are regarding the interactions between commuting, geography, infrastructure sections, etc. I'm partially arguing about a situation with a less voluntary shutoff on a comparable scale. A scenario with similar infrastructure availability, just larger regions with sparse/meager availability. Think of what you'd have in case of a sudden jump to 100% renewables. Existing storage doesn't suffice for 24/7 traditional load curves. Overall demand is higher than supply....
Anyways, it was more a yawning in defeat than a case of "confused pikachu". (Forgive me for the wording, and feel free to correct. I'm not trying to joke.)
If grid instability becomes a bigger problem, due to e.g. decades of corruption surrounding infrastructure maintenance, I expect household-scale battery installations to become a more popular thing.