...because it's a goddamn research balloon. Those don't tend to have security related technology restrictions like military devices do.

The insinuation that "oh look at all these seeseepee compliant companies in their spying" is complete bullshit fear mongering.

Occam's Razor: some grand conspiracy where China managed to get multiple major Western companies in on their illegal spying of the west, with said Western companies knowing that the device with their tech on it will almost certainly be captured and inspected, exposing their involvement in it, complete with the companies not bothering to obfuscate their markings. Or they needed to make a civilian balloon so they sourced the best parts they (read: probably not even the central government, most likely a university, research institution, or local government) could get quickly and cost effectively, some of which being Chinese and others Western, you know, like how all civilian tech components are sourced?