A lot of deniers switch to some weird form of defiant stoicism, and pride themselves in taking that stance. I don’t believe there’s ever going to be any switch until the hurt is economic, and that might happen locally in some places, but not globally.
I am really scared for the daughters I have, in what kind of shit show they will have to live. But the scale of suffering this is going to cause is beyond the ability of our brains to process, and it will come down on the poorest and most vulnerable on the planet, and I have to say that is something that remains constant throughout modern history.