The plague did wonders for us, didnt it? Of course dead people arent livivng or thriving, but if they leave behind a world that has more job opportunities, housing opportunities, cleaner environments, quality food for less....
There have been historical cases made that the plague was a driver of a series of follow on events that upended the previous order - so people like Gates sitting at the top of the current world order might not want to be so blase about the effects of climate change