I agree with Sorn...why would they do such a stupid thing??? I mean if i made my own country and the people wouldnt agree with my ideas, i wouldn't punish them! I would instead ask for their own ideas and see whether it is a great idea, and maybe i would approve to them.
I think the purpose of the camp is also to warn North Koreans outside of the camp how severe the punishment would be if they commit something wrong that goes against the law or its government. I'm not sure if people would realize what actually happens within the camp but if they do, they wouldn't do something that can influence their future generations, which is a cruel reality. So I think the camp is there to basically scare people and prevent them from doing any wrongdoings against the government.