Earlier quoted context omitted.
The reticence of politicians to address climate change is strongly correlated with their age. Of course there are outliers but it seems clear that "I'm not going to be alive when the shit hits the fan" does a lot to assuage existential anxieties related to climate change.
Blaming the elderly here seems misguided to me. I suspect the lifestyle of an average 20-year-old today puts much more burden on the environment/climate than the lifestyle of their parents in their twenties. ADD: The amount of time each spends _talking_ about climate change is a different matter of course.
American CO2 emissions per capita reached their highest level in the 1970s and declined later:
https://knoema.com/atlas/United-States-of-America/CO2-emissi...