> "Why not? And Australians, they're explicitly (by law) required to be spies."

How come we don't see Gitlab re-considering hiring Australians then?

> "And your comment suggests as much - why would opsec about consumer / sensitive data be important unless you expect your employees to act in less-than-fair manner (be that for personal gain, a competitor's gain, a national gain, ...)?"

The defense industry will put you through background checks, demand a security clearance, and won't hire you unless you're a citizen - whilst simultaneously employing some of the strictest security measures available today. Security will stay there long after you've stopped hiring Chinese and Russian individuals.