HN user
I'm not sure I agree. It was started by an Apple employee, endorsed by Apple, 90% of all commits is done by Apple employees, and is hosted on Mac OS Forge (http://www.macosforge.org/), where Apple releases its open-source projects (Webkit, launchd, libdispatch, etc.)
Laurent doesn't use Git. The main repo for MacRuby is the SVN @ MacOS Forge (hosted by Apple), and has branches: http://www.macruby.org/trac/browser/MacRuby/branches
Also, if there is no commit referring to iOS, it's mainly because iOS is a very secretive project. You don't know what he actually worked on. You don't know if maybe he has local / internal (aka @ apple) changes concerning iOS.
Plus if Laurent's commits are too "few and far lately" as you said, it's probably because he either have other Apple related stuff to do, or simply because he doesn't want to add new features (yet) that might break before he releases 0.7: http://lists.macosforge.org/pipermail/macruby-devel/2010-Aug...
From http://www.macruby.org :
> "MacRuby is a free software project by Apple Inc. Sources are available under the Ruby license."