Why is it that in Korea, evaluations are conducted after the president's term ends?

When discussing evaluations of the South Korean president, I have noticed that many Koreans tend to wait until the end of the term. Why is this the case? In South Korea, there is a tendency to believe that a fair evaluation can only be made after the term ends, as the results of policies may not be fully revealed during the president's term. For example, economic or foreign policies may not show immediate effects, and the outcomes often become clearer over time. Additionally, the political environment in South Korea tends to change rapidly. In areas like Gangnam and Hongdae, political opinions are actively discussed, and this social atmosphere can also have an impact. What do you think about this evaluation method? Are there similar cases in other countries?