From what I've heard this doesn't really represent the on the ground reality of NK. From what I've read, thumb drives of South Korean media are rampant and pervasive in NK for those rich enough to have something to play it on which is seems like some substantial portion(wild guess 20-30%) of the population.

So I'd imagine most of those people have seen squid game. This just seems like more of a good headline to get to reference squid game and NK together and pick a specific example of some guy getting caught.