The author is a delusional crank. He is very deliberately ignoring the very cogent arguments for the Signal architecture in favour of some specious moaning abou

The author is a delusional crank. He is very deliberately ignoring the very cogent arguments for the Signal architecture in favour of some specious moaning about how play store is subverted by the NSA. If you want a federated / onion-routed message transport, start coding. You can use the signal ratchet mechanism if you want, you just can't call the resulting shibboleth Signal. Distribute only by obscure methods, easily subverted by users installing malware versions with higher search rankings. Then stand back and watch as hardly anyone used your app.