Hope you realize there’s a big difference between “can carry nukes” and “actually is carrying nukes”. You could drop one from a civilian airliner if you felt so inclined, doesn’t mean civilian planes are a danger to us all.
Besides, when the North has a military over twice the size of the south and is constantly saber rattling, it makes sense to keep an eye on the border. Wonder why they are spending so much on their military and not on, you know, their citizens.