Compelling to me also, as a person who has shied away from EVs because of charging time annoyances. I'd gladly trade the mileage for charging speed every time. Getting excited for what's to come.
Think of it like modern SLC backed QLC flash storage. As long as the usage profile fits inside of the cache, it runs as though the entire system is cache.
If it's just the former, the slow steady march of EV mindshare might solve your needs before the "L4" super-fast-charging battery. I am starting to see L2 chargers pop up in apartment parking lots, for example. IMO, "always charged" is significantly more convenient than short stops at a station, so it would still be desirable in a world where "L4" batteries and stations were common.
Keep in mind that EVs charge unattended, so you only spend a minute plugging in, and can leave to get a coffee, etc.
There are setups that have their max rated power per dispenser (“pump”), and halve it if two cars are plugged in to the same dispenser at the same time. Good chargers can do 300kW. If that splits to 150kW it’s not too bad - maybe 5 min slower, rather than double. That’s because the max speed the car can take is a curve, and that only flattens the peak.
However, for the 18-min charging the biggest gotcha is the temperature. In Hyundai/Kia it requires the battery to be at 20-25°C. That’s easy in the summer. In the winter the charging speed can drop as low as 80kW.
We would have walked to a nearby restaurant if needed.
I still have a gas vehicle but I never want to use it for long trips.
So on a road trip that I only wanted to charge twice for, one of the stops didn't work. Oh, and on the way back we had to wait for access to the faster charger. Maybe not so overblown.