I feel you there, although I do think it can be useful to say things like "people born before 1980 will not experience climate change like those born after."
Fair enough, as this is something that will happen to a given person, not some intrinsic attribute of their personality. But consider, too, the arbitrariness of specifying 1980. As someone born in 1980, I feel this acutely, as I'm not really gen-x nor am I really millennial. People born just before and just after me will feel climate change about the same. The framing implies a discrete change, but there isn't one.