There's a long standing joke (but also true) that many things are named after the last person to find them.

See, for instance, Stigler's Law https://en.wikipedia.org/wiki/Stigler%27s_law_of_eponymy (for the concept an example itself)

The list is interesting too:

https://en.wikipedia.org/wiki/List_of_examples_of_Stigler%27...

>> What personal benefit does this gain someone to publish it so quickly? Is it just social media attention?

> There are no prizes for being second in science.

The reply (second quote above) fits in context, but there is more to it.

1. Publishing early at the expense of quality has a way of catching up to one's reputation. (Hopefully.)

2. History has many examples of scientists who were "too early" or not "in the right place at the right time" to get recognition.

3. A result may get little attention in one field but a lot in another. One example that comes to mind are string-matching algorithms. Sometimes they seem a dime-a-dozen in CS. But the "right" ones have transformed DNA sequencing.

Except, most likely, in exactly this story with the second paper from the original Korean authors (if things can be proven to be true).