[codingdave]

Good management would also mentor and coach people who get promoted. Being great at an individual contributor role is a good start to being a leader, but there are additional leadership and business skills and knowledge that need to be added on to successfully move up the chain. A leader who actively gives his newly promoted people those skills will help them grow to their full potential and avoid the Peter Principle. But if you just promote them and walk away... you are setting them up for failure.