The notion propagated by fanboys is that Microsoft software is the least secure on the planet, and if you believe that then you might well expect Microsoft to occupy many if not most of the top 10 places. The point of the headline is that it doesn't. It's based on challenging a known assumption, not establishing the opposite assumption.
Every time Microsoft releases a new product the Astroturfing goes through the roof and the dishonest message is insulting to experienced system engineers.