Yes, you're right. The slave camps of North Korea are known to be superb schools for literary technique. It's disappointing in the extreme that someone who was raised amidst torture, starvation, and unspeakable cruelty wouldn't have found the time to hone his writing style to an acceptable level of polish and sophistication. The fact that he isn't even a native English speaker is no excuse. And the important thing about the book is the style and the excitement it delivers, not the truth it reveals. Why don't you write to the guy and tell him he doesn't know how to write a book?
You might want to read the entire article before you post.