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.