Earlier quoted context omitted.
I fail to see your point. Does the number of U.S. prisoners diminish the vileness of what goes on in North Korea? Are you saying/suggesting that the numbers of prisoners in the U.S. are so great that other countries are beyond criticism? That it's hypocritical for Americans or the American government to be shocked by the situation in North Korea? Can you clarify?
I'll answer for him, it's your last suggestion It's hypocritical for someone in the US to criticize other nations about their prison systems when we're leading the world in locking people up for crazy shit. That's not to say we can't have an opinion, just not a holier-than-thou attitude about it.
When "Thou" is plain fucking evil, it's perfectly acceptable to be holier-than-thou.