You may be mature, and have left your mother's care, but it is very idealistic and illogical to think that without rules, all people are mature and stable individuals. It only takes one to ruin life for those adjusting to a new country. It is a mixed bag, and universities obviously do not know their teachers well before hiring them.
I believe the other poster was referring to a couple who were absolute hell-raisers, and demented, sadistic, sick and unforgiving individuals.
Their names are Andy B[edited] and Katrina Z[edited].