South Korean educational system recently had a crackdown on private academy(hakwon), and in their infinite wisdom, decided to ban every non-public educational experiences (including things like international olympiad awards) when applying for the university. Which means that the only thing you can submit in the application is SAT scores, some public education awards, and personal essays. Naturally it became the fight of who can write the most compelling personal essays for the university, and people started to let their children 'write' academic papers so that they can write stories to claim their interest and impetus on the application in hopes of impressing the judges.
So it is not a selection criteria but it helped rich & powerful people get an edge in the university application.