No, I don't believe it was specifically tied to this system. Dr. Mark Peterson[1] who has his own great channel[2] and a video on this topic (in Korean)[3] exp

No, I don't believe it was specifically tied to this system. Dr. Mark Peterson[1] who has his own great channel[2] and a video on this topic (in Korean)[3] explains it as mostly just happening as a clerical matter both during the Choson period by simply registering a name to align with prestigious families and to hide your caste status and then later during the Japanese occupation since it was demanded as part of the growing Japanese empire. In practice, it's less confusing than it sounds. Koreans will use contextual associations such as other family members, titles, friend or business associations, and historic clan hometowns to discern things. "Oh, you are a Kim also? Which one?" "I'm from the Jeonju Kims." "Oh haha! I'm from the Incheon Kims. I know another Jeonju Kim, are you that one?" "No that's CEO Kim he's my distant uncle. I'm just the normal Kim. My wife is so and so." "Ahh, okay." (completely made up example that's probably wrong but meh) And after that everybody is clear on who is who. This kind of thing is often included in some introductory stuff about what age everybody is so you can get your honorifics sorted out as well. 1 - https://youtu.be/4VVCbApZ4bg https://youtu.be/4VVCbApZ4bg 2 - https://www.youtube.com/@TheFrogOutsidetheWell https://www.youtube.com/@TheFrogOutsidetheWell 3 - https://youtu.be/tLcwZ4p2pIU https://youtu.be/tLcwZ4p2pIU