

Denmark is already doing the same thing anyway. You haven’t highlighted any particular advantages of KylinOS over other variants of Linux.
I don’t think it would be wise to install an operating system developed for the Chinese military. That’s just moving the problem somewhere else - instead of trusting Microsoft and the US, you’re trusting China. China are much more likely to have off the shelf hacking solutions for their operating system than whatever variant of Linux you freely choose.
Sounds like the Alcoholic’s Anonymous loophole will work, you just need to decide your higher power is a doorknob or whatever.