How is the PLA hacking American companies and accessing designs different from the NSA hacking Huawei and accessing source code? Their justifications differ, but not their actions.
Basically, the military is acting as an arm of corporate espionage. That's a big no-no.
Basically, the military is acting as an arm of corporate espionage. In the US.
Saying that the NSA wouldn't do that is stupid, and anybody who says otherwise is either ignorant or otherwise malicious.
The US government aids its corporations in every way it can, and it has done so throughout its history.