Look at how good russian spies were at infiltrating the gov't : https://en.wikipedia.org/wiki/Cambridge_Five , and tell me that china couldn't do the same or better.
You're probably right, they might have some sketchy way, but if you really wanted to see who is doing what with your data from within your data center you could really set controls to do so.
The USA is just much better at pretending everything it does is rightful.
I mean, "a history of suppressing minorities" in the summer of 2020 is very funny. It does feel like Gen Z kids are aware of global events enough to not fall for this, so maybe it is ending.
China on the other hand, screams everyday how it wants to own taiwan. Aggressively threatens any country who dares to touch the south china seas, which it does not own.
Yes, your boss is not allowed to talk to you about national security letters, unless your specific involvement is needed.
I as an outsider can't tell and have to trust. For that I have to evaluate how important your site as a target for such measures is, how likely I am the target and how likely my data is just close to a Target's data and how much of it will be in a full data grab for later usage.
Judges to the FISC are appointed by the Chief Justice without any further oversight and the Chief Justice is politically appointed as well. (A democratic process for nominating judges isn't easy,. but vesting the power into a single hand is questionable)
Also the low number of modified or rejected warrants is suspicious (the positive interpretation might be that warrants are well prepared and thus qualify)
For me as an foreigner to both cases, both approaches are problematic and I have no democratic influence over either process. And yeah, I trust US more to be aligned with my interests, but neither is a happy thing for me.