That would temper any expectations you had that you could draw any sane conclusions from their data.
Believe me, as I've had personal experience interacting with the CDC, I'm well aware of how much I can trust what they say. That said, what I was observing here is that, by the CDC's own representations, more people in the U.S. have died "with/from" COVID in September 2021 than did so in September 2020, notwithstanding the fact that, in September 2020, no one had yet been vaccinated.
And since, by law, the CDC is the federal government's number one cheerleader in promoting vaccines, I find this data coming out of the CDC curious indeed. One might have expected that, if "dishonesty" was on the table with respect to this reported data, to see something different.
Or, as has been said by others, if the vaccines work, then why aren't they working? In this case, though, mine is not a rhetorical question. There are presumably other confounders in play here that may provide an explanation, but I don't know what those might be.