I agree and disagree
We're not in SK but it doesn't mean that as kpop fans we didn't feel the impact and success of big hits in korea like Supernova, Whiplash, Love dive, I am, Super Shy etc.....
the thing of " We're not in a certain country so we don't get the hold the song have in this country" is for me a weak argument nowadays considering the development of social media
With social media now something successfull in one country isn't limited to this country only and can be felt outside of the border of this country
and the opposite effect also work, the international success of something from this country can impact the success of this thing in the country
example with Fifty Fifty song who was popular internationally but not in korea, when the song start to get steam overseas, it helped the song become more successfull in korea