You do realize this article proves exactly what I said, correct? Korean history is incredibly ancient, and as such part of it has heavy elements of folklore. This does not mean Koreans actually believe in unicorns, but that the iconography is symbolic, and as such it has historic ties. Have you ever spoken to a Korean, southern Koreans included? This isn't exclusive to the north, the South also has mythologized elements (they have a common history), they aren't treated as actual history and instead as folklore. The west reports on this as though northerners believe the folklore, which is wrong.