Adding narration almost always creates approach, and sometimes clarifies the goal. The approach will usually give the DM what they need to adjudicate the situation a majority of the time, and if narration provides the goal then it dramatically helps to avoid misunderstandings.No, it's not about simply adding narration. That's the misconception that we can't seem to dispel.
It would be nice if more players included goal in their narration, of course. That’s the one that tends to get left out as often as not.