They want decisive and ambitious action, you can't get that if we all turn to doomerism.
The doom of climate change is mostly people to dumb to understand the most basic of models or (worse) unwilling to do so on ideological grounds. I already decided not to have children in my life because I think it is irresponsible to put them into this world. We will have enough climate migration anyways.
The truth is that there are tripping points that are extremely hard to reverse and may or may not trigger other tripping points. Reading these risks as a reason not to care is the opposite of what should happen.
And then you figure out what the real reason is to burn the world: some rich fucks trying to extract a few thousand dollars per second more f4om the r3st of us.