Note for all about the Signal messaging app. While the level of stupid for someone to have a secret level government...

[0rganism]

1. i like Signal a lot, it's an elegant answer to many questions. Per normal, evil people get to use it too

As you point out, endpoint-to-endpoint security remains extremely nice but its value greatly diminishes if the endpoints themselves are compromised, which is what the EVIL IDIOTS did this week. Presumably, they continue to use it even now; maybe they've since ran a purge of responsible journalists in NSA and DOD group chats and called it "good", who knows? Still an excellent application if you know what you're doing and handle your endpoints responsibly.