I'm not really on top of the whole Megalian thing (and not familiar with the case you mentioned). While it's true that the gender conflict in Korea is trending tenser in general (it was interesting to watch how the Gangnam Station murder results in lots of semi-related venting), I think Megalian is about as fringe as /r/redpill or something. It's not something average Koreans are aware of or that comes up during normal conversation.