This has nothing to do with "China spying on the US" and has everything to do with "US citizens piercing the total information control matrix and questioning the government".
If some US drone manufacturer crosses the administration in some way, say in terms of backdoors or lack thereof, it's one less option for the consumer.
Think chat control in the EU but based on executive order in the US, and drones.
Not like a full-on conspiracy or anything but I wouldn't say it's beyond the pale for that kind of conversation control to be SOP for some groups somewhere.
Also, we already know that many foreign countries have intentionally hired people to do specifically that.