I mean, the entire song was making fun of the Gangnam District being wealthy. It has the highest average income per resident in South Korea. I wouldn't exactly say that's people already in a bad situations.
There are of course exceptions, but a massive fire in Manhattan is totally different than one in the Bronx for instance.

Ah see that article has a completely different framing than the OP. The OP make sit seem that it's the Gangnam District that's known to be wealthy directly, not a "slum" nearby.
That is extremely important context that Reuters seems to have missed/ignored.