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Burnley123 Though I am not very Right-leaning even in UK terms, and it's not often I agree with your political views, I do here!
The USA tends to either commercialise or politicise - or both - everything to the
nth degree, and seems to invent more conspiracy fantasies than everyone else put together. Even so there may well be a lot of serious, well-debated, cross-Party agreement there, but sadly lost in the "campaign-trail" and "[anti?]social-media" noise.
It's certainly lost on much of SW where many American supporters of their own, only two, Parties can't even discuss the climate and environment, nor their own nation's politics, without mere personal insults and swearing: no attempt to see the other's side, no analysis, no subtleties, compromise.
What I don't know though, is how much a site like SW reflects real American life - nor do we know what posts really are from there or are malign ones pretending to be US-made. I think I have read some that may well be from external activists.
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Whether the American conspiracy-fans are mainly Left, Right or balanced across their nation's spectrum, seemingly broadly Right of its European equivalents, I cannot say but they certainly demand everyone thinks as they do, and must not listen to real politicians of
all sides, let alone anyone who understands any science and engineering. (The latter to solve the problems shown by the former.)
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A lot of the climate-change "deniers" seems to have moved from process to cause, but often ruin their own case by clearly not really understanding natural processes, never mind how human activities can affect them. Poor understanding of scientific methods, too.
It's as if they've rote-remembered, and like to parrot, random fragments from school science and geography, or popular-science TV shows and poor newspaper reporting, but have not really learnt basic science, nor twigged the contexts.
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Under it all though, I think your Paragraph 3) spot-on, but I am not certain which they fear more: greater "government" (i.e. tax-payers') spending, or changes to their profligate lives. Obviously it will be individual choice, but I think the life-style the more common motive.