South Koreans are no more censored in their media than we are in the UK. They unseated a president, impeached her and put her in prison.
As for the death penalty, I don't believe they've executed anyone in SK since 1997, unlike the USA for instance, which continues to be in the top 10 for executions worldwide every year, sharing the list with countries like Somalia, Iran, Saudi Arabia, China, Iraq...Yet I doubt most would call Americans sheep.
Of course most people don't want to spend 2 years in the army. Just like Israel or Taiwan though, they do it due to their unique geopolitical situation. Not becasuse they're programmed to follow like sheep. Its why most celebrities are keen to not be seen getting around it in nefarious ways, because the backlash against it (from normal people) usually cuts their celebrity careers short. The issue isn't with the government's response, its peer pressure and public reaction that does them.