Exactly. Not all technical mentoring is about software engineering; many of the problems junior employees face are regarding soft skills that they need to get their job done. While you might understand what to do if you're blocked internally, or if you're waiting on third party software, or if you get feedback that you don't understand on a code review, these are - new - problems to a lot of people getting started in the workplace, that many try and fail to solve on their own.