I used to have to shlep two laptops around and reduced that to one thanks to virtual machinery.
And since getting my Evo in June 2010 (not my first Android - that one) and later my dual core 3D, I've had less and less occasion to drag a laptop around at all.
More than the simple e-appliance that my feature phone or first Android was, I not only get email and web, I get streaming media and fun games, I get a fully-featured and comprehensive photo editor (and a video editor if I so choose, but it's a CPU hog), I get full Microsoft office documents editing capability (whose compatibility has been more than good enough for me), a portable wireless network monitor, full videochat capabilities, an ebook reader, wifi printing - and plus it can make phone calls.
Given that I use my phone now in over half the cases where I once HAD to rely on my laptop, I don't think it's cooking the numbers at all to include Android. Or for Apple to include iPads by the same logic. And when MS unifies their desktops and mobiles under Win8, I don't think that adding them in will be cooking the numbers either.
Ask anyone how useful they'd find their desktop without the internet. Mobile superphones are fast becoming the internet access point of choice for many.
So - Android, not Linux-based, but rather, simply Linux, and because I no longer have to carry a Mac, Win, or *nix laptop at all times because of it - Android counts in my book.
Personal computing is changing.
No longer are you restricted to using a stripped down business machine running a home edition of a real OS or a Mac as your primary home user choices for the Linux-afraid or Linux for the more savvy.
Now you can do personal computing on a truly personal device.
An iPhone is great smartphone.
An Android is a mini-laptop, thanks to it being Linux.