You seem to miss the most important lesson: if #FireChat wanted to survive and be the tool revolutionaries, missionaries, and others can always rely on, it would have to be #OpenSource. It wasn’t. So, we have now only #Tor and similar craziness where you need at least a PhD in CS to use it.
(and yes, perhaps #NewNode, although I don’t see it on #FDroid, which makes it suspicious).