Not everyone is well informed about the realities of climate change, but many are and it's a concern I hear from normal people from the US, Europe, and Asia that I've met. Some bury their heads in the sand, and if you do you'll ignore others who haven't, but it's a very legitimate concern for people with a basic awareness of reality. Things have gotten far worse in my lifetime, probably older people are more concerned since we can see the changes more clearly, but not all young people are deluded or ignorant about the reality of climate change.