I think Sandeha has provided a path to the truth on this one. Steve McCurry's work is, in my opinion, has been influenced heavily by his "employer" (National Geographic) and its audience. What would be the use of shooting different subjects in a style that is contra to what's required and will sell?
As for the patronising diatribe the article contains about adherence to compositional rules, the colours and "pretty pictures", I have to disagree. I am, as you might have guessed, a big fan of McCurry's work and have been so since I first spotted his name in National Geographic - years before he shot "Afghan Girl". His photos, again in my opinion, demonstrate a broad range of style from straightforward photojournalism (as with his work in Afghanistan before the Gulf Wars), through travel and pictorial to some of the most stunning portraits I've ever witnessed.
I really don't know how Steve McCurry's work can be referred to as "boring" - other than if that is the author's own personal view of it. The article is interesting, in many respects but, yet again in my opinion, proves that (to paraphrase) "Those who can, do. Those who can't, preach".