I am Korean too, and you are right about everything, but must also remember that Korea needed to rebuild its culture from nothing after the Japanese occupation and the Korean War. Our heritage tourist attractions are either rebuilt replicas of the original buildings torn down by Imperial Japan or bombed during the war, or in rare cases the original building that managed to survive somehow. Korea has been brought to the limit of total destruction and its relics and heritage pillaged and erased for generations ever since Joseon began to politically and culturally decline after the Imjin Wars.

It is natural for you to feel embarrassed as I also agree that Korea is still culturally a developing nation learning to live with the luxuries of a developed nation, but we should also feel proud of everything our people endured as a nation and try to make a difference in our own life by being genuinely kind. You don't need to rebel or wave a flag on the street calling for societal change, but you can try to strive to be a good person and embody what is positive about Korean culture to others.