American-manufactured devices are probably equally as infiltrated by American foreign intelligence services. Hence why they don't just use a standard Linux distro with open source firmware.
Heck, if you look at where Chinese officials try to stash their money and their families, it's clear they trust Western countries a lot more too.
As an EU citizen, idk, China seems more locally focused, the U.S reaches everywhere. Speaking of NZ, the whole Kim Dotcom situation makes it look like a U.S.vassal state, honestly.