I have had the belief for a few years that the rise of fascism is an emotional response to being afraid of an uncertain future that people feel like they have no power over.
It was 9/11 butterfly effect. The US's wars caused a refugee crisis, xenophobes across North America and Europe got their panties in a bunch about all the new brown people, turned to nationalism. New (and popular) authoritarian anti terrorism laws probably didn't help either.
Scared people want strong leaders (a daddy) to tell them it's okay, it's not the climate, it's the queers, migrants, etc. And Daddy's going to fix it.
Blame may not be the right word. But the destruction of our environment and everything that goes with it, certainly gives authoritarianism an opening.
Judith Butler goes pretty deep into this in Who's Afraid of Gender? Of course their analysis focuses mostly on how gender queer people end up being targeted. But the unnamed fear of climate destruction is a big factor. And trans people one of many scapegoats for power hungry demagogues.
Or maybe a broken political and economic system is causing a gathering of wealth in the hands of the 1% which is a major factor behind both climate change and increasing authoritarianism