It seems you might be too optimistic here. I doubt Trumpism will end with Trump.
In general, hard climate change denial as an ideology is only _really_ a thing in states that produce a lot of oil (or, specifically in the case of Australia, coal), and not all of them (notably it never caught on to any great degree in Norway). It's really very much motivated reasoning, and even Trump-esque movements outside the US generally don't push it too hard.
A fair assessment but then it didn't start with Trump either, really. He just exploited a renewable resource the most efficiently so far.
Charles Coughlin and before him the Know Nothings did the same. Anti-intellectual illiberalism is a fundamental strain of US political belief.
But, as good as that opportunity is, I'm afraid the 3 years this administration has left wouldn't be enough to fully disassemble the US advantage. :)