Many on “the left” still believe Trump coordinated with Russia in his election for example. And that Russia was instrumental in that win.

2020:

The Senate Intelligence Committee has released the final report from its bipartisan investigation into Moscow’s interference in the 2016 U.S. election.

The committee spent more than three years working on it, investigating Russia’s interference, as you said, in the 2016 election. They reviewed more than a million documents, documents that were provided by U.S. spy agencies as well as documents that were provided by witnesses. They also interviewed witnesses - hundreds of them, including a lot of familiar names - Donald Trump Jr., former Trump campaign chairman Paul Manafort but also former Obama administration officials.

And all of that digging has gone into this report, and the committee concludes that Russia conducted a sophisticated and aggressive campaign to influence the U.S. election to help Donald Trump beat Hillary Clinton and that folks on Team Trump were more than happy to accept help from the Russians. But what’s really important about that conclusion is that it is a bipartisan one. It is endorsed by both Democrats and Republicans.

This report is, to a large extent, something that reaches the same conclusion that Mueller did on the question of Russia’s interference. And the committee didn’t draw a conclusion on whether the Trump campaign conspired or colluded with Russia. What the committee did instead was lay out the facts that they found and then kind of leave it to the reader to make up their own mind. Some committee Republicans, in an annex to the report, declared that there was no evidence that the Trump campaign colluded. Democratic members, in contrast, called Russia’s actions and the Trump team’s openness to them, quote, “one of the single most grave counterintelligence threats in modern American history.”

(Emphasis mine)

It’s not that far-fetched at all to think that the Trump campaign coordinated with Russia in 2016.

If you go by the results of this investigation, it’s equally as wrong to assert that they didn’t.