We have no control over how others treat the planet, all we can do is do our best with our little corner and solve the problems that arise - really, this holds true whether one believes humans are causing global warming or not.
This is where the reality of science runs up against the reality of politics.
Let's be crystal clear: NOBODY in the West is going to live a monastic/reserved/carbon footprint free life and watch folks elsewhere NOT also have to "save the planet" with us. We can't get people to pay more in taxes, can't get them to conserve energy without imposing it, cannot get them to wear masks or take shots.
And no, folks, appealing to anyone's sense of so-called "shame" isn't going to work, either. You couldn't shame the majority of voters from re-electing Donald Trump (yeah, yeah, plurality but who cares) after he'd been convicted of 34 felonies and inspired January 6th......but "people will listen to our good intentions", right?
And I'm not one that thinks climate change is a hoax or a conspiracy theory or anything else sinister. (I can easily note a number of the popular level arguments are bad, but that doesn't make climate change a hoax).
But human nature is NOT going to sacrifice jack squat unless you impose it and it's universal. You'd think a political party that held onto power for years with labor unions and the "you can't make me" approach would know you can't force people to not eat meat, to buy EVs, etc., but they apparently think it can be done without some sort of authoritarian ruler.
You get elected in the USA on two issues:
1) the economy (which includes unemployment and inflation and, yes, prices)
2) national security (which includes - wait for it - the border)
They'll tell you what you want to hear (this is literally a "both sides" thing) about what they're gonna do about abortion, DEI/affirmative action/civil rights, crime, gay marriage, trans in sports (or not), gun control and climate change. But any candidate spending ANY time on anything other than the two issues listed above is wasting their time and breath.