Unless the app you're using use the alternate push notification system e.g.Unified Push, There's no point in microG having their own servers. Demand your favorite app publisher to release a Non-GCM version of their app on F-Droid.
> I currently have GooglePlay disabled and I've never had issues with Signal notifications
Good for you, As I said its pull notification. In simple terms a scheduled local service asks the app's server whether you have new messages. The service needs to be active all the time consuming power, You'd probably seeing a pinned notification for it; Every pull notification app needs its own such service.
> I keep hearing this myth about how notifications can't work seemlessly without GCM. I don't believe it :)
Nothing to do with myth (or) belief system. Push (or) Pull is the technical fact w.r.t notifications.
Yeah, I'm not a privacy fanatic, but literally having all my notifications funneled through one ad company .. that's on the far end of creepy/dystopian .. Thanks but no-thanks
I keep hearing this myth about how notifications can't work seemlessly without GCM. I don't believe it :)
I currently have GooglePlay disabled and I've never had issues with Signal notifications. However Instagram doesn't work at all. And Messenger is very inconsistent
If apps like WeChat do it then I don't believe it's impossible