But the other thing that apparently can push people into reevaluating their beliefs? Horrific, personal, trauma. Someone who’s whole town was destroyed by climate change might be shaken up enough to rethink their world view. Maybe.

Your first point needs to happen first otherwise this scenario just gets spun into "stupid liberals want you to think it's humans doing this, it's just natural cycles the earth goes through. Look back millions of years and you'll see a period where average temperatures were 90°! Do you want to let liberals charge you more for Beautiful Gasoline™ over a lie!?"