It reads like an advert. Why did this need to be written? Who sat down and came across a random email from Snapchat's CEO and thought it was so insightful that they needed to write an entire article on it?
The emails are leaked from the Sony hack. People have been combing through them and they came across the SnapChat ones this week. They came across ones about Angeline Jolie/Kevin Hart/etc last week, and they will probably find others to write blog posts about next week.