Everything on that thread you linked has no credible sources.

Yeah actually, I'd rather have my government doing the backdooring than a foreign one. My interests are generally more aligned with the US government's than China's.

cool.

another question.

What about someone in EU or africa or india. who should in your opinion spy on them? usa or china?

Ideally both to be safe...

Maybe just add a third neutral participant to have three spying forces for no breaks.

No one ideally, but in the real world someone is going to be. It's considered basically accepted by governments, just don't get caught.

That being said, it's interesting that a lot of the China vs US heat started ramping up right when China rounded up a bunch of CIA assets in the country. It's arguable from a game theory perspective that everyone's better off with a bunch of spying so everyone knows what's really going on in a country. Transparency is usually considered good in other areas. I can't see why that wouldn't apply here.

It's also worth pointing out that by and large, it's very likely the important programs aren't spying on day to day citizens, especially as the war on terror has faded. They're just not that important, and it's riskier. It's economic, military, and political espionage.