The article says at the bottom that it was written in response to another and provides a link.
13 karma · joined December 24, 2014
There's a difference between this and just general "best practices". The latter are positive and suggestive whereas the former tends to be very absolute.
Power users are not a group that mostly just does "simple web browsing and document processing".
I see your point in general but I don't personally feel that they market it that way.
I do agree that making it more Linux-friendly or selling a pre-installed Linux version would be great.