Responses
I think that's the main reason; they never experienced it. My mother was the same; she had family problems and conflicts. But even so, she's never forced me to feel the same way; I can decide what to do. It's a kind of freedom that prevents your children from perpetuating resentment. Hyesung didn't raise Byul to hate her grandmother "Revenge kills the soul and poisons it." But it's understandable why many people don't like this narrative, what his mother did to him simply cannot be erased with an apologize
If I was hyesung, i'd just put that woman in a retirement home and be done with it. Why is he expected to give grace to the mother who left him with an abusive and violent father in his most vulnerable years. She abandoned and endangered a child.
Dojin and byul did not live through this and have always known loving parents so they don't get to tell hyesung how to feel about this woman.
The author is suddenly pushing the filial piety too much in this sequel.