Uhhhhhh did you watch the video?

He goes to great lengths to point out that it isn’t an efficiency problem, and despite US residential standard outlets being 120VAC dedicated electric kettles are still the fastest way to boil water given other appliances (though induction cooktops are closing the gap).

The biggest reason dedicated electric kettles are not popular in the US is because we’re either boiling water for cooking some meal (pot is already on the stove so why bother with another appliance) or we’re making coffee. And the vast majority of coffee makers over here have the exact same circuitry and heating elements as an electric kettle. It’s just not standalone