If they are skilled enough to win an Asian Games gold medal, they will live well even after military service

That means they are at least the best in the country for that discipline.
Even in team events, they must be an elite athlete.
At that level, they live comfortably with a stable position on a corporate team.
There are probably no other countries like ours that pay amateur athletes such high salaries through taxes.
We are a country that pays hundreds of millions of won in annual salary to archers.
What is the problem with missing a year and a half? They can continue training while serving in the Sangmu (military sports unit).