Rubbish.
https://en.wikipedia.org/wiki/List_of_totalitarian_regimes
North Korea is by no means unique and will come to a sticky end eventually like all the rest. It may be 5 years, 10 years or 50 years but it will happen.
Of course there have been other regimes that are totalitarian but none ever like NK.
It’s on a whole other level to the rest in terms of the cut off from the outside world, the level of indoctrination, the length of time it’s gone on for and treating the leader as a god almost.
Other regimes have some of the above but non have all of them and to the level NK does.