Re: Why the uproar ?
Yes, the uproar is because of China - and it's rightfully justified.
I agree with you - if the country you're in, any country, decides that you're a person of interest, they can look at your expenses to see what's going on.
However, the question is that measure of becoming a person of interest. If that bar is set incredibly low, as countries like China are wont to do, there you go - welcome to dystopian realities.