As an American, my top realization was... everywhere else in the world yall use electric kettles - Americans frequently only have a stove top kettle like it's the fucking eighteenth century.
Honest truth is that people in the US don't need to use kettles as much, so for a lot of households it's just a question of why buy an extra appliance when the cheap $10 kettle from Target or a small saucepan will do for the few times a year a kettle becomes convenient.
Ramen is most commonly sold in sealed plastic bags in America. We just cook it in a pot like any other pasta. Lots of people I know don't own any kind of kettle. If they need to boil water a pot or the microwave both work just fine.
Personally, I like tea, but I also have an induction cooktop, so I just have a kettle for that. It's great. All the advantages of an electric kettle without having to put an electrical appliance by my sink.
That's the thing, the answer for a lot of people in the US is no.
After coffee, the most common need for boiled water in US households is probably for pasta, and a kettle's not really the tool for either of those.
People that do eat a lot of instant ramen or drink a lot of tea in the US are more likely to have electric kettles (as some people I know do) but most don't eat ramen often enough and tea just isn't as big here.