Northern Koreans live and work around the world, the major barrier is the sanctions placed on it by the US Empire. Further, how is the DPRK "genocidal?" They were subjected to genocide by the US during the Korean war. The DPRK is one of the world's most propagandized against countries on the planet, they aren't some totalitarian hellscape where KJU eats everyone's food or anything.
In reality, the DPRK is a developing country with a consistent ideology called Juche. The reason it seems "crazy" is because we do not actually listen to them on their own terms, we have a language barrier, and because they are so heavily shut out from western views. Documentaries like My Brothers and Sisters in the North, as well as YouTube videos like We Went to North Korea to Get a Haircut help humanize northern Koreans as people.