I've been sort of tracking the conversation for the past few pages and I'll weigh in on it. I don't think merely using the word "genocide" in regards to an event in a video game is insensitive.

If a specific IRL event was referenced and had a comparison made to it like: "oh yeah, the Sundering was the Ancients' version of the Holocaust," then I would say that's inappropriate and going too far. But to just say the Sundering was genocide doesn't seem distasteful to me.

Just my 2 cents.