No they're not. Everything Fatman Kim does is to preserve his regime first and foremost.
North Korea is an absolute monarchy disguised as a communist state. Think of the Kims as a dynasty, and they want to make it last as long as possible. That's why the cult of personality, the aggressive propaganda towards the West and its nuclear programs are all designed to keep them isolated. They actually want to be isolated from the rest of the world, but with modern luxury to the Kim family and its inner circle.
The moment North Korea opens up, its people will realize the kind of monsters the Kims are, and how bad their lives are. The Kim family has mismanaged North Korea to such an extend that reform is not possible anymore, only lies and isolation will keep them from imploding.