Comment by jampa

It depends a lot.

In your first two points, I think that after you know your team well enough, you will understand where your engineers' skills lie and learn how to delegate effectively to either the person most capable or the one who will learn the most.

Your last point is true in larger enterprises. However, it's not so bad if you are a manager in smaller companies or startups, when you are 1-3 steps from the CEO, you get a lot of independence.

In the other points, I must admit I never went through an RIF and never had a situation where the "engineers were too green." However, I worked at an enterprise company where there was a 1:1 ratio of interns to employees, so it might be a large enterprise. Generally, there is always at least one senior in the team to deal with firefighting.