And that they broke out iOS (even iPhone/iPad separately), but not Android (I suspect it's in the oddly high Linux category).

They didn't break out android because it would contradict the usage numbers they would like people to believe.

Yes, i'm sure that's the reason ....</s>

It would actually be impressive if google was such a single cohesive whole

If Google is not a single cohesive whole, how can you speak for it?

Certain people have certain authority to talk about certain things.

I set policy around open source and open source licensing. I can speak officially to open source issues for Google (though at least here, i'm not unless I specifically say I am)

This does not mean it's a cohesive whole however.

In particular, a small team Of 3-4 people in the middle of a random non-android product area is not going to have the android team breathing down their neck asking them to "not break down numbers" or whatever the parent thinks happened here.

Since executives such as Eric Schmidt are happy to quote numbers about Android or Google+ in opaque and misleading ways, it seems entirely reasonable to believe that some other teams within Google may act to preserve the general message out of esprit-de-corps, whether or not they have android team members breathing down their necks.