China spies on the U.S., Russia, France. There are genuine concerns about those powers exfiltrating data. And it’s possibly ethical to combat that process. But spying is also stabilizing to relationships. Your fears about where a country is or is not are always worse than the reality. If you only have a black box, you can put all your fears into it, particularly opportunists in government or private industry who want to address a problem that may not exist. If you know what a government is doing, that can reduce tensions.
One of the many interesting parts in the long interview with Julian Assange. As per usual, I recommend reading all of it.