Japanese colonial era, didn't Korea have Noblesse Oblige?

 I'm studying in Beijing, so I sometimes talk about anti-Japanese struggles with teachers during class. Every time that happens, what comes out is mostly Kim Il-sung. Since they are young teachers, Kim Il-sung seemed to be the representative when it comes to the patriotic martyr of the Joseon Revolution before liberation. There seemed to be little known independence activists familiar to us, such as General Kim Jwa-jin and Teacher Kim Gu. (Because the subject is Chinese, the teachers may lack knowledge..) Then this semester, a very old teacher over 70 came into the class and it was very fun. It was amazing that he was a party member and didn't retire and continued to take the main course. While talking to him, I was able to hear the revolutionary learning(?) of the members of the Communist Party of China before reform and opening, and he said that he had a tremendous revolutionary learning almost in advance. It was a class reminiscent of North Korea that started the day with studying the Motaek-dong quote and ended the day with the Communist Party. Thanks to this, we were able to know unexpected revolutionary martyrs (independence activists for us). You knew Arirang's Kim San quite well. He also gave us a preview of Uiryeoldan.I was shocked because he knew better than I did. His words always end by emphasizing that the revolutions in China and Joseon were struggles by workers and farmers. It seems that it is very uncomfortable to see more and more capitalist students in South Korea these days. Korean students spend a lot of money. Anyway, let's get to the point.I expected famous people from China or Joseon as a noble, not a worker or farmer, and they listened to Joo Eun-rae as a representatively. It is said that Joo Eun-rae was a noble of the nobility. It is said that there are 3,000 servants at home, so he is from a great family. In addition, some of the early members of the Communist Party of China say that there are not many strong family members. On the other hand, in Joseon, it was not easy to find the strong family restraint among revolutionary martyrs (independence activists). Personally, as a result of looking for it out of curiosity, the first vice president, Lee Si-young, was a representative independence activist from Yangban, and it was difficult to find other than that. I could find quite a few people from small aristocrats, but it was rare for independence activists from a true noble (middle class) to be except for Lee Si-young's six brothers. What could be the reason? Was the Japanese imperial conciliatory measure very effective? Why didn't our aristocrats resist much during the colonial period? Except for anti-Japanese soldiers.At that time, most of them were soldiers from common people:)