Simply put: I don't believe this stuff. I think people have encased themselves in a bubble of hyperbole in which the light of reality only periodically shines through.
I lost any remaining faith in anyone's ability to apply skepticism to the things they desperately want to be true around the time everyone took the golden showers on Obama's bed story at face value.
It's such a liberal wank fantasy - this idea of Trump as the puppet of an evil foreign empire whose election victory was wholly illegitimate, and how any minute now it'll all be revealed and brought crashing down in the most spectacular way possible. It fully absolves them for their defeats, and hands them victory on a plate. What a surprise that they so deeply want it to be true.
Over the last year or so I've seen this kind of thing play out a bunch of times across the spectrum - the Bernie fans convinced his victory was assured long after there was any realistic chance of that happening, the conservatives convinced Clinton was literally going to jail for Bengazi or the fucking emails.
Now the liberals rejoin the party with their Russian puppetmaster fantasies, convinced this whole fantastical, flawlessly executed Manchurian candidate scheme will be exposed and bring down the government any day now, even though there's little solid indication that it's based on anything but speculation and innuendo. Even though there's little reason to think Trump's ramshackle operation could cover up almost anything at all.
Everyone caught in these bubbles believe wholeheartedly until the last possible moment. And then once reality rudely asserts itself once and for all they're like "...WHU???", sink into despair and are forced either to reengage with the real world, or double down on conspiracy theories to explain the failure of their last conspiracy theory.
There's two "fantasies" here: the conspiracy and the fallout.
The extent of the conspiracy is, as most here have said, more likely to be opportunistic and haphazard than the culmination of a years-long Master Plan. Even in the most knuckle-headed version, it still represents an unprecedented level of tampering by and collusion with a foreign power in order to influence our elections. The import of that cannot be overstated, and it's not just the Huffington Post suggesting it happened. It's every intelligence agency and mainstream media outlet in the western world.
As for the fallout, yeah, anyone who thinks it will somehow put the democrats in power before 2020 is deluding themselves. But things are already happening because of it. And remember, we're not even 1/3 of the way through the first 100 days yet. This is still, ostensibly, the honeymoon period when the president is still enjoying their inaugural boost in approval. But this president's top national security advisor resigned over some light treason within the first month. And the replacement reportedly turned down the job. That didn't happen with Nixon, so don't tell me that there's no way this amounts to anything. For one, it already has, and for another we haven't reached the bottom of the barrel yet. Fox News has flat-out called the president a habitual liar, within the first month of his term. To use a cliche, this is not normal.
As for the Trump campaign being in contact with Russia, that is another claim that has little impact. It is obviously incredibly shady that the campaign was in contact with a government who was trying to influence the outcome of a US election to favor that campaign, but unless there is incontrovertible proof of collusion, that claim just won't stick to Trump.