After his book 'David and Goliath' received numerous bad reviews for oversimplifying things and pinning causes on things that don't make sense, Gladwell lashed out at his critics and basically said that his books are not written for experts. [3]
Almost all of Gladwell's books are written in a style that categorically states that the subjects of his writing have a predetermined cause and effect. He doesn't leave much to chance, uncertainty or some other unknown cause. Everything is certain. His stories and narrations always imply a cause. That's the real secret of his writing.
[1] https://blogs.cornell.edu/info2040/2016/11/14/the-tipping-po...
[2] https://www.smithsonianmag.com/smart-news/sorry-malcolm-glad...
[3] https://www.theguardian.com/books/2013/sep/29/malcolm-gladwe...