because it’s making people feel hopeless and apathetic, which is actually slowing our efforts to change.
That's the thing I don't get. How to come to such a conclusion?
If you ever have been on a sinking ship, you know how suddenly even the worst enemies will cooperate willingly quite well in face of time pressure and a life threat. Some might even be willing to sacrifice themselves when in such a situation, even a few minutes gained can make a huge difference. But aswell if the situation seems hopeless.
It's totally atypical for most humans to just accept fate and relax in any life threatening situation. Humans tend to die fighting/ defending.
climate change unstoppable != scary life threatening consequences
Those are two entirely different narratives.
(And I didn't get past the paywall.)