On the streets this may be so, but I'm convinced many rich high-profile deniers are simply liars. They're making hay while the sun shines (manageably). They'll have read their Tainter et al, and know the wealthy are likely to be able to buy themselves a plum spot from which to view the collapse. All those super-wealthy Americans weren't (pre-Ardern) snaffling up chunks of New Zealand just because it's pretty.
I don't know if all Abrahamic religions believe this, but in Islam at least we believe that as we near the end of the world natural disasters will increase greatly, so it seems that the end of humanity and eventually this reality entirely is how God will fix this.
Unless I am misunderstanding something, I would argue that belief is incredibly harmful if it is not true, as it will lead people to avoid trying to solve problems that they may actually be able to solve.
I disagree, death for example is inevitable but nonetheless we are commanded to protect life. The inevitable does not exempt a person from doing their best, everyone will be held to account for their actions.
I'm simply saying that if someone believed a disastrous situation was directly caused by a deity, it seems that would be a strong disincentive to actually trying to fix the situation themselves. Why on Earth would anyone work directly against the actions of God, or try to take responsibility for something that God is clearly in charge of?
I have seen people use similar logic before, even specifically for climate change.