I think it's more of a generalization of the Korean scientific community, of which most Koreans are not a part.
But there have been some doozies in Korean science, especially the stem cell guy who really embarrassed and shamed his country with the extent of deception he practiced. Brilliant, but also crazy.
My point is that it was a generalization against korean scientists and a few instances is not representative of an entire group. Your point seems to be that the korean instances are somehow higher profile, but if that was the case then UK research science would be the worst because the vaccine/autism scandal has probably had the most far reaching after effects and infamy.
Ratio of U.S. to ROK scientists is about 6:1.[2]
OK, so # of scientists isn't 10:1. But in terms of scientific activity, the U.S. is far and away more productive.
1. http://www.scimagojr.com/countryrank.php 2. http://chartsbin.com/view/1124
It's almost as if you are saying that some fraud is to be expected and is therefore fine when actually any fraud is wrong.