If you really read the article, he's not saying we are just going to simplify the offense. He saying they need to get really good at the basics first, the simple stuff, then he will add his wrinkles. Which is smart. Why advance to Algebra, if we had a hard time with basic math the last few seasons?
Besides, tell me what was so complicated about Mannings and Brady's offense last year? Sure Manning and his offense got slapped around by the Seahawks(Who have a better defense), for the most past their offense worked last year, nothing real exotic about it. Just great formations, and great execution.