I don’t think that’s the right answer. Android isn’t a good operating system, it’s a great operating system for mobile. All these mobile Linux distro projects face a monumental challenge to reach parity with Android on almost any metric. Even if any one of them was backed by major investment, I don’t think they’ll ever succeed…and if they do, we’d just end up with multiple competing open source operating systems which just creates pointless fragmentation.

Android is open source, but it’s held by an evil monopolist. The most effective path to freedom on mobile is legal/regulatory, and supporting efforts to break Google up. They’ve already been declared an illegal monopoly twice in two separate cases. The first one ended with a slap on the wrist, because the judge was a spineless coward. The second one is currently in the remedy phase, and hopefully will have a real impact.