Right, they totally deserve criticism for their handling of the virus. They did a bad job, and the misinformation they are putting out there right now is pretty bad and inflammatory, too.
But the outbreak here in the US has more than a single cause, and there were plenty of people who should have known better and should have been preparing. They didn't, clearly. The fact that we lag the world in per capita testing is just one part of that, the loud and persistent minimizing of the threat the virus posed by senior voices in politics and the media were also incredibly detrimental.
There are a lot of lessons we should learn from this pandemic. Learning those lessons well should permit us to mitigate our risk from a future pandemic. But I'm worried that, rather than learn any of those lessons about our own shortfalls, we will be much more likely to simply blame China entirely, ignoring our own culpability because hey jingoism is so much more satisfying than introspection.