No one is forcing you to use proprietary software. See this comment from moxie
https://news.ycombinator.com/item?id=10665520Using GCM is only a problem for people running a custom Android ROM without Google Play Services. Using GCM doesn't make Signal less private.
Google doesn't see any data via gcm, it's just a tickle. If you want push messages, you gotta use a push network.
https://twitter.com/whispersystems/status/695399112833761283
Feel free to help out with code https://github.com/LibreSignal/LibreSignal/issues/43 or money https://www.bountysource.com/issues/35722527-create-proper-p... if using Signal without GCM is important to you.
If the only thing that the remaining people here want out of LibreSignal is a websocket-only solution and gmscore isn't an option for whatever reason, I would consider a clean, well written, and well tested PR for websocket-only support in Signal. I expect it to have high battery consumption and an unreliable user experience, but would be fine with it if it comes with a warning and only runs in the absence of play services. However, I also realize that still won't help people that are trying to build a Google-free experience on Google's platform https://github.com/WhisperSystems/Signal-Android/issues/127 , since we still don't have the things we need https://github.com/WhisperSystems/Signal-Android/issues/127#... to be comfortable distributing software outside of Play.
https://github.com/LibreSignal/LibreSignal/issues/37#issueco...
Considering how a small minority complain about this everytime Signal is mentioned you'd think they'd do something about it, but take a look at that Bountysource link and you'll see 8 backers. Guess complaining is easier.