How does the recent poor performance of the Korean national football team compare to other countries?

Recently, there has been a lot of criticism regarding the South Korean national football team. In particular, their poor performance on big stages like the World Cup has come under scrutiny. Many have been conscious of the rivalry with Japan, but the recent results have not lived up to expectations. Looking at other countries, Italy has failed to qualify for the World Cup twice recently, and Germany experienced group stage exits in the 2018 and 2022 World Cups. Brazil lost 7-1 to Germany in the World Cup held in their own country in 2014. Even traditionally strong teams experience failures. What could be the reason for the particularly harsh criticism of the South Korean football team? Is it because South Korean football fans express strong dissatisfaction with the KFA? Or is it that the internet and media amplify this issue? I am curious about your thoughts.