That's great! However, when I see "murena unified account" I feel like one thing is replaced with another. I'd like to be able to synchronize my android-like open os phone with my own cloud. It's really not a rocket science...
I've been using /e/OS on my phone for a few months now. It comes with built-in DAVx5. Their hosted offering is just another provider and using your own cloud provider is the same process as using theirs. Even their device locator integration is independent from their hosted offering. Of all the Android distributions I've used, it's the one that does providing a hosted service best and it was honestly refreshing.