In some sense yes. However, everyone at any level benefits from a teacher/mentor/coach, if only to get some outside perspective. The top tennis players, golfer

In some sense yes. However, everyone at any level benefits from a teacher/mentor/coach, if only to get some outside perspective. The top tennis players, golfers, etc all have coaches. It doesn’t quite map to programming, but it shows no matter how good you are you can have something to learn from someone else.