I think you're overreacting.
I know many korean fans of figure skating and Kim Yuna that are very good people and very good fans. BTW I'm myself a fan of Kim Yuna. There are only few crazy fans (from all over the world, not only from Korea) but you just see their comments everywhere so you may think that they are a majority but in the fact they are really a minority...
Zhenya knows how loved she is by her fans. She always says that it gives her strength and support. I think our ultimate weapon against every hate is more love and support for our favorite without putting down or humiliating other skaters.