Earlier quoted context omitted.
The irony of Peter Cooper advocating the Peter Principle is not lost on me.
Funny, but not as funny as if it were true. PP is when you're competent and get promoted to something you suck at; Peter's suggestion is the other way around. Sorry to nitpick.
If someone is succeeding as a programmer, that says nothing about how they'll do as a manager. Therefore pushing for that promotion is a good way to wind up getting promoted to something you such at. Which is the Peter Principle at work.