This doesn't match up with my career. The worst manager I ever had was one of the better writers. One of the better managers I've had rarely wrote and when he

This doesn't match up with my career. The worst manager I ever had was one of the better writers. One of the better managers I've had rarely wrote and when he did it was solidly mediocre. The difference between them was what that the terrible manager was focused only on the interests of his superiors and peers, thinking it would advance him; the good manager obsessively worked to create alignment between thier subordinates interests and that of the greater organization. The good manager has advanced and been successful as a 1st level manager. The terrible manager's goodbye letter was well written. Writing well is an important skill that and all the good executive level (100+ report) managers I've had write well, but it is neither necessary nor sufficient for 1st level managers.