If the priest is who he presents himself to be, then confession is good for the soul. Or so the saying goes.
But what happens if the priest is actually something else?
Do the things said in confession become the things you are later afraid the "bad" priest will share with others?
Is that why priests get transferred instead of prosecuted? Is that why a priest or former priest might come with terrific references from some people of high standing ... or are these same people the people you might suspect have things they wish that priest would never share?
Thought experiment: The church board members have a matter brought to them about the misconduct, perhaps illegal activities, of their priest. They have the choice of calling the authorities or transferring their priest to another location. The board members, of course being good members of the faith, have regularly taken advantage of confession and have poured out their inner thoughts to their trusted flock leader.