[javajosh]

That's a terrible thing to say to your leader. Indeed, if you really believe it, you should leave, roughly for the same reasons in the OP's article! That is, you don't have the time or the knowledge to mentor a CEO.

Far more actionable is when an executive seems to be operating under an incorrect assumption about the world (people, customers, technology, etc) and you offer what you believe is a solid refutation of their incorrect belief, ideally without ego or rancor. Employees that can do this consistently are extremely valuable to an organization.