So this is broadly how it has gone:
a. climate change denial acclimatised the Right into believing grand conspiracy theories (even though it was not explicitly called such, but what else could it be when scientific body after scientific body, from all nations, continued year after year to not only acknowledge the science was right, but became more certain about it?)
b. Obama triggered underlying American racism and Hilary Clinton became a hate figure over feminism;
c. Trump came along as a leader endorsing the open statement of populist racism, anti-feminism and climate change denial, as well as making explicit a long simmering Manichean view of politics that all opposition to Right wing views is inherently evil and works undercover to destroy the God fearing people with their (ridiculous) figurehead Trump. Conspiracy belief is thus elevated to new heights.
d. COVID response is completely politicised primarily due to Right wing conspiracy belief, which transcends even the views of their idiot leader (Trump) when he recommended vaccination. [I suspect people will quibble about this, and say that libertarian opposition to lockdown is not a nutty as anti-vax conspiracy - I would say that ideological blinkers of libertarianism are only marginally less dire than anti-vax conspiracy - they are still virtually impossible to argue with.]
e. All of this has been able to fester and spread like never before because of both social media and the greed and power hunger of Rupert Murdoch and a cast of smaller broadcasters.
I just thought I would put this summary down again, after reading the absolute rubbish circulating on the post - Catallaxy blogs. (I hesitate to link to it, but this one today by the increasingly obnoxious Arky is typical.) They are in a particular period of pain at the moment because of the Scott Morrison turn around on climate change, with the dis-ingenous endorsement of the Murdoch press.
It never occurs to them that they simply made the wrong call on climate change, and instead of acknowledging that, they choose to double down on grand conspiracy. You know, the education system is just liberal/Marxist indoctrination, etc. And this is readily extended to their approach to COVID - the previously long standing institutional sources of expertise are not to be trusted, just like they cannot be on climate change, and amateurs in their sheds (mostly men) are capable of just a good an analysis as anyone else. And most stupidly, they think it is all about people wanting power over them, when it is they who are supporting authoritarian regimes around the world, as long as they share their conservative world view.
A ship of (mostly) old fools, and with a strong streak of religious conservatism thrown in now as well.
Completely unable to be engaged in reasoned argument.