

Our grid uses the same voltages as Europe. Our houses even generally receive 240V from the line. It’s just that we went with 120V for most appliances and electronics for some reason.
I’d also argue a lot of Americans technically do have electric kettles, and they just don’t realize it because they’re advertised as coffee makers. It’s not ideal, but you can definitely use a drip coffee machine to boil water, and it’ll still be faster than a stove.
It’s mostly for commercial installations, but you can get 3-phase 480V here if you want it.
I don’t think this has much to do with the grid, though. It’s more that we started with 120V appliances, so that’s what we built our homes to support.