Not sure what you mean. Americans do brew hot coffee, but they generally don’t use a kettle to brew it. Hand-brewing methods like pour over are a very recent trend here. In my experience growing up, the vast majority of households used an electric drip coffee machine, or a stovetop percolator before they had electricity. Even now, when pour over and the aeropress are starting to get popular, I’d wager that a vast majority of households are still using a machine - either a drip machine or one of those pod machines - rather than a brewing method that requires a kettle.

Edit: found some stats on American home coffee brewing. Among Americans who brew coffee at home, 48% tend to use a drip machine, and 29% use a pod machine, neither of which requires a kettle. If we assume the entire pour over (5%) and French press (5%) market owns a kettle, and that the entire “other” category (6%) owns a kettle (which seems very generous), that’s still only 16% of home coffee drinkers using a kettle. (Another 7% use an espresso machine or percolator, and I think the last 1% was lost to rounding.)

Unfortunately for every tea drinker in an American hotel, most coffee makers (at least the drip kind) will make any water boiled inside taste like coffee, unless they’ve been used exclusively for plain boiled water. Maybe a combo tea/coffee drinker wouldn’t mind, but I’ve always found it intolerable.

But it’s a good point about the grid - we have plenty of appliances for coffee that are principally glorified water boilers, and there’s no evidence that our appliance voltage has hampered their popularity at all.

I think this is the largest reason right here. People are naturally going to reserve their limited counter space for the stuff they use daily. For Americans, that’s more likely to be some kind of coffee maker than an electric kettle.

Growing up where I did, I knew a lot of families that regularly made iced tea. But they usually made a gallon at a time, once or twice a week, and still drank coffee every day - so they had counter top coffee makers, and stovetop kettles that could be stored away the rest of the week.

Great video on this from technology connections. tl;dr it takes more time, but not, like, that much more. We mostly just don’t have a huge tea-drinking culture here.

My family (American) did drink a lot of tea. Surprise surprise, we had a kettle. I did not die of old age from the cumulative weight of all that waiting.