I'd argue the SMS/MMS reliance in the US is entirely because there have been no caps on it for years now. Nearly all plans you can get here have unlimited SMS/MMS included, even cheap prepaid ones.
Having a fixed allotment of texts or minutes hasn't been a thing for over a decade at this point, and the only thing that's expensive now is data.
Our typical US 120V household outlets can't pull that much power. Most electric kettles here draw about 1.5 kW.
Could run a 240V circuit (or tap into the oven/range 240V circuit I suppose) and use an imported UK kettle. I've heard of people here actually doing this, but I can live with the slower boil times ๐