At least, I can totally see how it would seem as such to anyone from the UK (and most of the world).
They're easier to find these days but still rare. If you ask for a hot tea at a restaurant, you'll often get a suspicious-looking teabag that has spent at least 6 months in the cupboard (iced is more available). I'm sure you can guess at the quality of most of the teas in an American grocery store; I usually wind up ordering from specialty tea shops instead.
Here's my take...
The difference between the United States and other countries is how we internalize things. We're very much guilt or shame driven because of the heavy influences of puritanical, fundamentalist, and catholic religions.
It's not that Americans don't cheat/indulge/whatever, it's that they feel bad about doing it. And that doesn't stop Americans from doing things, they just try to hide or repent for what they've done.
* Thinking about it a little more, there are also people here with a strong sense of entitlement and bewildering moral fortitude. They'll break down in tears or want to start a fight if you cuss in their presence but have no qualms about "moving" to Florida to dodge paying taxes or vehicle registration fees.
There are things in my life I'd rather lie about, but I don't because I never learned to lie convincingly. The same with cheating. Figuring out how to cheat on a test/interview sounds like a way more effortful and stressful experience than acting honestly (I shudder to imagine how it compounds imposter syndrome).
Imo "moving" to Florida (and similar tactics) got normalized, so it's easier for people to learn how to do it from a friend etc. so they do it more. No moralizing necessary.