> A single decision by Moxie or a single court order in some country can make Signal unavailable to a large part of its user base. This is a great point made later on the thread. And already happened in some countries, for example, with whatsapp. Social pressure was big enough to revert it in a reasonable time, but time is very relative on how much you or your business relies on it.
I'm sure that if Moxie turned evil it would be difficult for the project to survive, but that's also one of the reasons they've been successful. They have control over what they're building, and they can move fast and make breaking changes. It's very difficult to build something beautiful when you can't make breaking changes.