Some would conclude Americans are the most bullheaded people in the world...*
We are also fatter and older than most of the world, with arguably poorer natural immunities to begin with.
*What I mean is, first, China’s numbers are almost certainly a farce: They should not even be included in the “rest of the world” data. That’s a big hunk of the denominator removed.
But, China’s data veracity aside, most of the world handled COVID so differently from the US and parts of the West, in ways unacceptable to most Americans (particularly the almost unbelievably Orwellian, intense surveillance and tracking of populations in places like China or even South Korea), that comparisons such as you make are just flat out irrelevant, unless one is trying to argue that unacceptable policies should be forced on us. I am not trying to be “mean” in saying that, it’s just the straight up truth.
As for CDC, first, it is not a monolith. The data side of it is slow and inefficient and generally “too low” (see flu seasons of the last decade, “in progress” seasonal reports vs. “final” reports once all the death certificates have been reviewed), but they usually seem to eventually be in the ballpark, and I know of no credible serious (as in off by a factor of 4 or something like that) challenges to what they finally determine in the way of fatalities.
OTOH, most of the rest of CDC is a mess. It’s program of public education via the media throughout COVID has been utterly incompetent and likely counterproductive.
The "most of the rest of CDC is a mess" and the messaging is "utterly incompetent and likely counterproductive." But you trust the "data side."
That is clearly your conlcusion. Oddly not everyone shares your conclusion.