Why the concerns about the Busan North Port Park railings are funny

Unlike people from other provinces, people from Busan get things done efficiently and thoroughly. And those railings are steel; they are even treated with a special salt-resistant coating. Also, have you ever seen news about a building collapsing or a bridge collapsing in Busan?
On the other hand, regional cities like Seoul have constant accidents.
The Sampoong Department Store collapse in Seoul, the Seongsu Bridge collapse in Seoul, the Cheonggyecheon railing collapse in Seoul, and so on.
Because Busan is close to Japan, they handle things professionally, much like the Japanese. They don't have that "hurry-hurry" culture of doing things sloppily like in Seoul.