Good analysis. It's true. The people who still think there was collusion between the Trump campaign and Russia are now "Truthers". They are the Left's version of "Birthers" - those people on the right obsessed with Obama's birth certificate. Both sets of people are/were insane. But I'm hoping the majority of people fall in the middle of these two crazy sets of people.
Though our current political climate has little room for any objective truth. Political loyalties determine what is true and what is not true. People will continue to view everything through the prism of their political affiliations. And while the Left thinks Trump is dangerous to Democracy, I would counter that the Left right now is the most dangerous movement to Democracy due to the way they approach facts that don't fit in with their worldview.
Here's hoping I don't end up on AOC's list of those who need to be liquidated. And yes, the rhetoric from AOC is very reminiscent of Totalitarian regimes.