Your minds will be blown when you realize just how much StarCraft is ingrained into South Korean culture. They literally had (or have) dedicated TV channels just for StarCraft.
Brood War was the first video game to be broadcast on TV in Korea. I'm pretty sure it's still going.
Eh… I'm fairly sure that most of the people here are old enough to have played Star Craft and Brood War when it first came out, and are fully aware of e-sports becoming huge in South Korea. And I have a hard time imagining younger generations that grew up with e-sports being an established thing instead of a novelty to not be aware of how South Korea looks at Brood War differently.