According to this[1] data Honeycomb is <2% of used Android versions. With the versions that 98% of the devices run being open I'd say it's a bit more than just touting about it..
Why did they even bother, then? That info makes this whole thing less understandable to me, not more.
Edit: Actually, that's beside the point. I think the reason they made Honeycomb is because they thought a lot of people would buy Android tablets, because a lot of people were buying iPads. But they were wrong about that.
I'm just saying, if they did it this way one time, there's no guarantee they won't do it again. How "open" it is, is really subject to Google's whim.
