This is not about the US citizenry but about the state.
If you can't actually see how the American state (not population or country) has devolved into something to be concerned about over the last 20 years, perhaps you're not looking hard enough.
Domestic politics and policies are cruel and divisive, international policies have regressed dramatically (i.e. they've pulled out of major international treaties around arms and climate and trade).
In the eyes of the average world citizen, America used to export an aspirational culture, now they export greed, cynicism, and technological dystopia (and I don't mean Facebook, I mean mass surveillance and drone warfare).
They are of course not alone in all this, but they are the biggest and most powerful country on the planet, so they lead by example, and it's becoming a shittier example every year.
So yeah, as an outsider looking into the US, I don't find that comment mindless at all.