It just seems sad that the value of all that code is diminished significantly by the lack of a community around it (or actual reviewable changesets, or a bug tracker that gets used by the developers).
And I don't really understand why this is. Sure, one part of it is that you can't disclose things you're doing with secretive hardware partners, but that doesn't mean that there shouldn't be public code owners for each Android app that I can have a honest discussion with, at least (or ask how they would like me to implement my pet feature).