Are you on speed? What's your question?

Linux isn't fragmented - the kernel is pretty much the same from distro to distro. It's the software stack on top of that which can be fragmented, and, more importantly for mobile devices, the GUI.
So if Meego presents a more widely adopted framework for cross-platform applications, then why not use it?
I think that's answered your question, but then again I can't be sure.