I don't mean to defend him at all (in fact, I do eat cereal, but it's local store brands and not Kellogg's), but isn't it normal for a person selling a product to tell people to buy its products?
At the same time, I agree it's terrible advice he's giving!!!
"Online fury" is a most excellent expression.
Online furies have been awakened and now you can't stop them, Wendy's!
Edit: fixed grammar