I will be brief. Everything you said is accurate, but nothing is relevant to what I said since I was talking about ethics more than lawfulness. Sure, the mass surveillance program Snowden revealed was unconstitutional, but it wasn't illegal. It was rubber-stamped by judges in private courts, which is another ethical question, but at no point the actual law was broken.

Same for law enforcement queries, they are perfectly legal, but why would you want to make law enforcement's job easier when we know how biased they are? The FBI doesn't have to hack into Google, Facebook or Apple when they can directly serve a warrant. I can't say much about the NSA or the CIA since these agencies' motives and actions are secretive by nature, and decentralization without end-to-end encryption would indeed make it easy for these actors to pry into Friendica's private data, but at this point I'm not sure what project/corporation can rival such nation-state actors in terms of privacy/information security.