GRIN !!! You do not read much, do you Morpheus?
But OK, so you want to use a 'light test' to judge the world? Let's look at a larger image of world lighting, while keeping in mind that maps like that must reflect the population in an area.
The image does not change the Korean contrast, but it does show China in much the same 'light' as South Korea and Japan.
The dark patch on the China map is Tibet, with an extremely low population density (compare Russia's Siberia which also has an extremely low population density).
And if you focus down onto a few of China's ten Tier one cities you will see that China is not dark like NK? So how do you explain that China is so lit-up? And please note that one of these top tier cities did not exist (except as a village) when Deng Xiaoping came to power and set China on a more pragmatic courses. These days, Shenzhen is the electronics capital of the world. How do you explain that?
In fact, how do you explain the rise of China, given that post 1950 China suffered greatly from the sort of savage sanctions (trade restrictions) that eventually crushed many nations? And it's those sanctions, more than anything else that makes NK dark on your posted map.
I have not claimed that NK is a paragon of virtue, but the American policy of hostility and sanctions is very much like the similar policies that Christianity has used in the past (and the JW's continue to use).
My claim is that you do not change countries by exclusion. The north Koreans are quite well aware that the USA can obliterate them. They have already experienced that obliteration in the closing months of the Korean war, where many reports state that there was hardly a building left standing. That more than anything else has fed their desperate drive to become a nuclear power, and the current problem that if the US strikes NK, then likely Seoul and some Japanese cities and possibly some American cities may suffer retaliation. Do you really think that is a desirable outcome?
A far better policy (in my very humble opinion) is to be inclusive. Everyone wants a better life. Feed that desire and change will inevitably follow. In spite of all the extreme measures used by the NK government to exclude knowledge of the outside world, that sort of information is gradually seeping into NK. If you looked at the South Korean videos I posted in this thread, you will have seen some 300 women (the cheer squad) likely all to have been from the elite classes, touring to various south Korean sights, Do you think they are not going to compare NK with SK? Yes, their ability to influence the leadership may be limited, but on the other, they may make remarks to families and close friends that will gradually change NK.
That's a whole lot better than blowing the shit out of people.
So take a look at that other place you hate:
https://www.youtube.com/watch?v=RSgdUVxNrbM
And, take some time to search Youtube or the internet for piks of pre-1949 China.