I doubt we'll see stories of people making botting tools getting jail time in Korea but the fact that there is a mechanism where they
could get jail time, it makes the rule enforceable.
The situation is you have people who break the rules and profit from that, you have enforcers who know who the people are who are breaking the rules but don't have a practical method for controlling them. So this gives them a bigger stick to threaten the bot makers with and presumably they will back down and try some other way to subvert the system that doesn't have the risk of jail time.
The big challenge is that they don't want to turn of players who are paying a subscription revenue but they don't want players that cheat either. If they can make it harder to cheat they hope to keep the revenue and reduce the cheating. Otherwise they ban players which reduces the cheating and reduces the revenue.
My own opinion is that finding the equivalent of shadow banning for these game players would be much more interesting. Back when I was playing World of Warcraft it was suggested that Blizzard might implement a way of adjusting the odds of reward for cheating players against them and in favor of people who were not cheating. That being a more subtle way of making cheating less beneficial and moving people away from it.