The Council of Islamic Ideology said the technology was being used in Pakistan to access content prohibited according to Islamic principles or forbidden by law, including “[…]websites that spread anarchy […].”
So they admit it’s not (only) about morals, but also (or mostly) about their position of power not being threatened.
BTW: By blocking access to the internet, they stop people from following the order in the Quoran which states that people should educate themselves.
Yeah, it fits perfectly with the other thing they don’t want their people to know about (anarchy).