To be exact, Koreans have a religion on the outside. But Koreans are not obsessed with religion in their daily lives. Most Koreans sometimes have a religion due to coercion from their parents when they are young, but when they become adults, they naturally move away from religion.
Even Korean Muslims don't keep praying five times a day. When I lived in Turkey, there were Turks like this. They introduce themselves as Muslims, but they said they drink alcohol and don't pray every day
Traditional superstitions and religious problems occur more in older people than in younger people in Korea. Religion accounts for very little in most ordinary Koreans' daily lives.
Far East basically sees religion in a different way due to their philosophy and culture compared to the Middle East and Europe where religion basically is part of daily lives.
SK and Japan have also never been brought up with an Abrahamic tradition. So they see religion in a different way.
Its true Turks will drink alcohol but they never will eat pork lmaoooo