The thing is I think the subject of genocide is just too close to the chest of a few certain key people (who admittedly probably have some first hand cultural background related to it) and it isn't a joke or even entertainment for them so much as reality.
I think it's less picking a fight over what people write about, and more discussion that tends to make light of it, even when the stand-in is devoid of all humanity.
Hence,
@Duesal saying we should just downplay the discussion and focus more on what's practical. Prosecuting total war against equally genocidal White Walkers tends to involve fighting them with powerful weapons, but talking about creating Sidhe Anthrax or Fiend Nerve Gas is gratuitous (well, rather, tactless).