I don’t think it would occur exactly as the above , I mean to that extreme.Cuba experienced the same type of multi generational brainwashing. The big difference is that early on before Fidel took over many Cubans fled and where able to send money, communicate with family members back home , etc. NK is literally and I mean literally cut off from the rest of the planet.
I have concluded that if tomorrow North Korea allowed foreign visitors safe passage - tens of thousands of curious Westerners would visit. It would be like an Orwellian Time Warp turned up to “eleven”.
) ridiculous, isn't it?