I also dislike that trope but I do like that she's trying to improve father and son's relationship with each other (the strawberry scene) instead of the author writing a mary sue that completely fails to acknowledge the situation. Because of that, I feel like the author included the trope as a bit of subversion to the usual holy mary mc trope, to hopefully tackle exactly how toxic and weird it is. I also think that the author is trying to address the theme of breaking the cycle of abuse (grandfather was the abuser in both father and son's lives), so I hope that goes somewhere good.

I do enjoy this manhwa since fl is cute and smart.
But I really hate the "father is cold toward his sons but gentle with daughter" concept