I would refer back to my own "since the process of expulsion or other punishment is sort of legalistic, the institution needs legalistic defense". Universities

I would refer back to my own "since the process of expulsion or other punishment is sort of legalistic, the institution needs legalistic defense". Universities do not allow their faculties and workers to expel students randomly and on whim. There is process about it, to prevent abuse of power. Consent forms are normal in whole range of areas, because society does not expect people to know all the rules that exist.