My impression of the relationship between a student and faculty member was based upon my own experience. Fortunately, that experience was a good one, although at the time I wasn't so sure. Later on when you become a faculty member or researcher and you have a student of your own, you may wind up not having the full range of knowledge about how to develop that relationship. Sometimes it doesn't work out right. It also works the other way around.
Students have to understand that they come to a graduate school to work.
That may be because of the changing of the students-who they are, their ideas, what is important to them. Maybe the science field or society's needs are changing and the ideas and people reflect that. You filled the shoes and adapted or modified your approach as to what a department is supposed to be. I'm sure there is a lot of truth in that statement. You do learn in your job.