Hi, author here. I don't think LibreSignal or indeed Signal will ever be the dominant mobile messenger out there. There's simply a lot of inertia to fight against. It's the same reason why it's hard to convince e.g. Facebook friends to move to a different social network, why Google+ failed, etc. Whenever the social aspect gets involved, companies can very easily create lock-in by being early, and then the social aspect will prevent the majority of people from considering changing, because 'it works'.
I never said that LibreSignal will replace Signal, and frankly, LibreSignal itself is not the solution either. But maybe LibreSignal will be the catalyst to a better solution.
We all want to prevent people hanging from cranes, but crypto alone does not equal privacy, does not keep you safe, especially not in those countries, where rubber hose cryptanalysis (https://xkcd.com/538/) is much more common. In those dangerous situations/countries, good operational security practices are better to avoid detection/suspicion than using any 'magic' crypto messaging app.
I never said that LibreSignal will replace Signal, and frankly, LibreSignal itself is not the solution either. But maybe LibreSignal will be the catalyst to a better solution.
We all want to prevent people hanging from cranes, but crypto alone does not equal privacy, does not keep you safe, especially not in those countries, where rubber hose cryptanalysis (https://xkcd.com/538/) is much more common. In those dangerous situations/countries, good operational security practices are better to avoid detection/suspicion than using any 'magic' crypto messaging app.