So what? You just trust that whatever someone ships you from within the US is not substandard?
What responsibility (in your world) does the system manufacturer have to test and validate the systems they build with imported or domestic components?
How about I reword your statement to be more in line with actual manufacturing practices?
The US Military is knowingly procuring US defense systems with substandard testing which can't tell the difference between standard and substandard components.
Why didn't they write that? Because mil-spec and even cots acquisition for avionics and such is so stringent that what these stories tell me is that these "counterfeit" parts are probably either very high-quality knockoffs, or, more likely, are production endstock that wasn't accounted for, or fell of a chicom mob truck. It is NOT a magic back door to F22s.
Do companies do 100% component testing in your world, or have they, like everyone else in the western world, adapted lean manufacturing processes?
You have to be able to trust your sources not to commit fraud. Whether the Chinese are doing it intentionally is another question.