I'm not surprised, it is a religion that is obsessed with "huris" i.e. "virgins" in this life and after life! Many of the clerics and their socalled students are sexually frustrated and are perverts. Heard of Seegheh?
The Muslim clerics in Iran since Arab-Islam invasion of Iran starting in the 7th century have always been extremely influential and actively tried to enforce and embed the Islamic 7th century laws in Iran, hence, indoctrinated the mass population over the ensuing centuries in Iran. When the late Shah and his father “Reza Shah” tried to diminish the cleric influence in Iran, the clerics resented the intervention. To this date, most, if not all, the ruling clerics despise the Pahlavi Dynasty, mainly because the Pahlavis tried to reduce the power of the clerics. With the rise of Mullahs to power in 1979, many if not all backward and 7th century Islamic laws have been imposed in Iran again and in full force. The idea or practice of polygamy or “Seegheh” does not exist in traditional Iranian/Persian culture. It is an Islam-Arab practice.