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.
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...
We should consider instead the current consumption habits of both cohorts for an appropriate comparison.
Didn't mean to make it sound so harsh, "dishonest" wasn't meant to be a reflection of your intention. I chose the wrong word.