

Not surprising. Korea has a HUGE population of smokers. While it has gone down in very recent years, back in 2017 almost half of all male adults were smokers. They still have 30% of the adult male population as smokers, though, which is double the US male smoking population.
Or the intentional actions of a person who understands that his insane ramblings can cause stock market drops and that walking back those insane ramblings will cause stock markets to recover, allowing him and his buddies to make more money.