Americans drink a ton of hot coffee, it's just typically drip.

Personally I can't stand coffee, but I'm a hot tea drinker. While I doubt we can stand up to the likes of places like the UK or China in terms of hot beverage consumption, I'd bet we're solidly middle-of-the-road globally on that metric.

That being said, what America does have is an uncommonly strong taste for cold drinks. Most Americans drink almost nothing at or around room temperature, so anything that isn't specifically a "hot drink" like tea or coffee is probably going to be served here very cold or on ice (excluding alcohol; most of us aren't drinking our Bordeaux with ice cubes, I promise). So yeah I guess our "average drink temp" is probably much lower due to that cold preference, if that's the kind of thing you think is worth measuring, but that cold preference doesn't mean hot drinks aren't still extremely common in America. They are.

Edit: I see somebody down voted you and wanted to state that it was not me. I don't think you said anything dismissive, or offensive, or off-topic, so I do not believe your comment deserves to be down voted. I know others don't care about this, but i do, so pardon this quick explainer