As I see it, it began with creationism, creating a base of concerted and deliberate ignorance. That perfected the tactics used in climate change denialism. At that point it was down to a science, and they created COVID antivax literally overnight. And that's killing people right now.
That anti-evolution stuff is still an active battle. In the US, only a bare majority accept evolution. Among the political party associated with climate denialism, it's only 33% accepting a science that became obvious well over a century ago. It's part of a constellation of just-plain-false beliefs; not mere differences of opinion but simply and objectively wrong.
It will only get worse. I see it coming to a head before climate change has really gotten going. I don't know what form it will take, but I expect it to be very, very bad.
If we're lucky it's just confused old people who had a bit too much lead in their childhood and the beliefs will just die out with them, but considering how long anti-evolution, anti-dinosaur etc. stuff remained an active political battle, it's somewhat depressing to imagine how long this can continue.