What's really funny is this flies in the face of typical human patterns of behavior where we obsess about longshot disasters we can't control, like catastrophic plane wrecks, and go "meh" about things that are much more likely that we can control, like the much higher risk of dying or being maimed in a car wreck.
I don't known about you but I look both ways when crossing streets. I have never bothered to try and protect myself from crashes during flights.
Wait, you seriously think a comet impact in the next 100 years is much more likely than mass extinction from warming planet? Comet impact IS the longshot disaster we can't control, and you are the one obsessing about it. Fossil fuels, and all the reasons why we don't just stop digging them up today, are totally in our control, and the time is ticking.
I think the point was more that it makes sense to worry about something of our own creation which we have, at least in theory, some control over and power to change, than about something that comes from outside with more force than we can handle.