One last comment on this specific part of the article: The author fails to make the distinction between Google (a Corporation organized around a set of common operating principles, stated goals and a product strategy) vs. the "Linux Community" which is not organized around a set of common operating principles, stated goals and product strategy. In fact, looking at all the different builds, forks, etc.. of Linux it's pretty clear the "Linux Community" will never be organized around the things I've identified above.
It's those differences that have made Google successful while the Linux Community continues to fracture and struggle to gain wide market acceptance.
Author gets a FAIL for not understanding those differences and why they're important.
If you add together all of the servers Google uses for its core business plus all of the Android smart phones and tablets out there in userland, I suspect Google accounts for the largest share of Linux usage of any company, by a wide margin.