ryrona (...) may suggest this is disinformation specifically targetting people likely to be involved in or close to criminal activity, which may mean it might be an attempt to discourage usage of actually secure systems like Signal and GrapheneOS among criminals in the hope they would move to something less secure instead. I have seen Tor being victim of such disinformation campaigns in the past.
I think so too - unfortunately the admins hid my comments (I didn't get involved before, I just read subsequent comments).
I think GOS is a big problem for such agencies and that's why it was and will be attacked. The idea is to make users distrustful, so that they choose something else that will be potentially easier to infiltrate.
The way this thread is being run is very visible. First, someone presented themselves as an amateur - a bit naive, and looking for help because they read something that suggested something. You, as well as others, got involved in the responses. And after this step, this person suddenly started introducing themselves as an expert in advanced attacks. Each subsequent statement was that I know something, but I won't tell you (I won't give you proof) - trust me.
In the EU there is Directive 2006/24/EC, which allows for the collection of various logs, including text message content. And this may be the "agreement with operators" that was mentioned. I don't think it is possible to decrypt messages from Signal, so this is also disinformation. If someone were to have access to GOS, it would probably be through the installation of an untrusted application, not through a zero-click exploit.