It's also likely that future EVs won't have this battery limitation, just put in the heavier gauge wires and breakers while you're in there if the house is going to be around for the next century.
Or less gloomy: In between appointments, you drive home to charge. Do you want to come 15m late just because your pipe is too weak?
Big pipe = freedom.
You can run out of gas in an ICE car too, and then it's even worse because you need to go track down a gas can instead of plugging in. The simple solution, of course, is to never fly that close to the Sun.
The scenario of an empty EV battery is not that unlikely. Eg you forgot to charge when you returned.
My wife drove me to the emergency room on a 3am Sunday morning when I felt like someone was pushing a golf ball out through my ribs and I had my gall bladder out that week. $750 copay for ambulance service.
What people need in their garage is 20 amps for the trickle charge to replenish the 30 miles lost from their commute and some grocery shopping overnight.