I'm going to suspect that the kind of people who put in long hours working and trying to improve themselves are not necessarily going to look favorably upon people who expect they can demand the fruits of Koreans' labor.
Then again, the Koreans in South Korea have their radical Leftists, so who can be sure?
I suspect your suspicions about hard workers not necessarily looking favorably upon their neighbors who are work challenged and who expect to be on the dole are correct.
I suspect also that the Korean “radical Leftists” tend to stay in Korea rather than immigrate to the US, the grand pooh bah of what is wrong in the world and the cause of South Korea’s problems or so these “leftists” think. Poor misguided souls.