Let's not go crazy here, it's 11 pages / 5.6k words. While it's unusual to have magazine articles that length these days, it's not a huge amount of time since that was more normal.
It's an excerpt from a book:
> Charles Duhigg is a Pulitzer Prize-winning reporter for The New York Times and the paper’s senior editor of live journalism. He is the author of ‘‘The Power of Habit’’ and the forthcoming book ‘‘Smarter Faster Better: The Secrets of Productivity in Life and Business,’’ from which this article is adapted.
It's an excerpt from a book:
> Charles Duhigg is a Pulitzer Prize-winning reporter for The New York Times and the paper’s senior editor of live journalism. He is the author of ‘‘The Power of Habit’’ and the forthcoming book ‘‘Smarter Faster Better: The Secrets of Productivity in Life and Business,’’ from which this article is adapted.