Hey there, the issue is that the South Korea category has not enough sources to function properly.
We can only use images that are given us by the RSS feeds we load, in this case it seems like we often have low quality images and few sources per story.
Our internal process prefers a low-quality image than not putting an image at all (which is debatable, I agree), but the source of the problem is that the current community sources are not good enough. Tweaking the pipeline would result in seeing no images vs high quality ones.