The tutor is so overbearing because she has all the information about your college life. Sometimes you bump into him, even if you study hard, you will fail. Or he will write some ugly words to you in your graduation evaluation answer. This is probably because you went to college for nothing for several years. If there is a stain on your resume, it will be difficult to find a job after graduation.
University tutors still have a lot of resources. For example, if a university wants to join the party, it needs to try every means to please its tutor, because whether it can join the party depends entirely on his words. Therefore, many people are willing to tolerate the hegemony of their tutors, and teachers will become more and more overbearing.