Curate, connect, and discover
I need to start off by saying that my opinion comes from a second-generation Vietnamese Canadian who grew up with very liberal parents, but extremely conservative grandparents.
As a child, my grandparents (with whom I spent a lot of time - my grandpa was the one in charge for my education) would constantly talk about filial piety. They were expecting me to get high-paying jobs so I would be providing for them AND my parents. I was the eldest sibling, and also the most motivated for school, so they had extremely high expectations for me to help the whole family out.
So coming from my own experience, when I see family-related noble idiocy issues on the screen, I can believe that they are realistic, especially in a country like Korea where Confucianism is still highly valued, But I also think that, like 0kuo0 has said, the issues have been highly exaggerated in some dramas. I am mostly thinking about those crazy dailies. Are they rooted in some truth? I don't doubt it one bit. But are they always resolved with Niagara Falls level of tears and major life-altering decision sending one character over the Pacific? I sure hope not.
Now, like I have said, while my grandparents were very conservative (”How dare you take a job as a college student? That means that you will quit school! You have to forego a social life and your personal needs for money so you can study to be a doctor and buy us a house where we will ALL live together!"), my parents were pretty cool. I got to do what I wanted, as long as it was reasonable, but my parents would still bend to all the demands of my grandparents.
It was really weird and frustrating to see my parents tell me one thing, but not dare to do it themselves. So I always get super frustrated at characters in drama who can't stand up for themselves when they did no wrong!
TLDR: Growing up with conservative grandparents, I recognize many of the examples in k-dramas. I think that for most part, it's pretty accurate with some exaggeration in dailies. On the other hand, in the West, the Confucian way of thinking kinda decreases with new generations, so while I understand why the characters are acting the way they are, I can't get over the fact that OMG YOU ARE A GROWN ASS MAN/WOMAN, JUST TALK TO EACH OTHER AND DON'T LET YOUR MOM RULE YOUR LIFE.