I think the point is that "North Korea bad" is both regrettably true and an overly simplistic way to look at the current situation without really thinking about the history of the Korean peninsula, the causes of the split, the war and what roles our own governments had in causing the entire situation. This doesn't change the indisputable fact that the Kim regimes have been brutal and that the DPRK is truly a nightmarishly awful place to live, but it lets a lot of other people off the hook.
Please explain how “our own governments” are in any way responsible for the actions and choices of one of the most brutal communist regimes in history. I’m presuming you’re Western. “Our own governments” have much to answer for, but North Korea isn’t one of those things.
The only alternative historical path would have completely erased South Korea, now a prosperous country that acts as a positive influence on the region and world. If any outside influence is responsible for North Korea, it is China, any other take beggar’s belief.
We can split hairs about what is true communism, but between the cult of personality, the economic system, its art and media, and the more ephemeral peculiarities of its public culture, it looks an awful lot like stepping into a time machine that takes you back to Stalinist-era USSR. There's really no place on Earth quite like it.