I'll bet many of these new members are from a younger generation. These are the ones who are no longer taught history in school, or are taught the version promulgated by commie teacher unions. They never lived under a communist regime or under any dictator, nor did they hear about these regimes from their parents. They usually don't keep up with current events either. Do they even know who Kim Jun Un is, or about the terrible conditions the people of North Korea live under?
This country presumably has the finest schools, but these schools turn out indoctrinated illiterates.