I have no problem with selfishness being portrayed as the ultimate evil. I think in many cases it is so and it only makes sense that it is a characteristic for so many antagonists. My issue is that in He Yi it is teamed up with all the other things that have traditionally been seen as undesirable in a woman. Like say, doing things that displease men.

Whereas, Mi Nam possesses no characteristic that gives the impression she gives two shits about her own well being. If she is ever under the impressio she caused hardship to someone, it crushes her.

It's the complete dichotomy between the two characters that bugs. If there was a little overlap into a grey area for either girl I'd feel better about it.