There is something more than that. The Japanese basically have trust in their country. I think there is a strong sense among them that their country is a good one, although they do not show their love of their country much. So when relations between Japan and South Korea are viewed, no one can discuss their problems on equal terms. South Korea has far more problems.
Japan is already a good country to some extent.
You should not expect anything of them. South Korean residents usually do not try to experience life in South Korea, although they like to argue about the country. The intellectuals of the group like to criticize Japan, but they only do so as they have not noticed how grave South Korea's problems are. In that respect, I belong to a new type of South Korean resident, although I have no great impact on South Korea as I basically work here and my books have not been translated into Korean. I often find that South Koreans who have emigrated to the United States criticize the country from a viewpoint like mine.