I think it’s not because North Korea is good at it, but because it doesn’t allow other countries to extradite its citizens. So they steal whenever they get the chance and aren’t afraid.
In other countries, America comes and kidnaps them.
Or if they don’t know who did it, they blame that side. What can they do?
Like Sun Wukong: when he caused a stir, they blamed him for every mistake or slip-up.
It’s as if it’s an empire with a monopoly on everything, and now it has an excuse to purge the place.