The point is not that these problems have been fixed. The point is that there seems to be some affinity or tendency in us to want to believe that we're all going to die at any time (or that we're in the "end times" for the religious folks).

Climate Change being real or not is not the point here. The point is that we have yet another generation of people believing that we're all screwed before we get old. Maybe that's it: it's actually easier for young people to believe that they don't have to make long-term decisions because they won't live that long.