The last few paragraphs of this Washington Post article about former defense secretary Jim Mattis (who is critical of Trump but who is holding back his critique out of a sense of duty) nail it. Dems were hoping for a silver bullet from Mueller, just as they're hoping now for one from Mattis.
"[T]hose frustrated with Mattis and/or Mueller are aiming their fire in the wrong direction. Democrats, Republicans and independents need to challenge their fellow citizens who are still inclined to vote for him [Trump]. Candidates for office, elected officials and other public figures have no shortage of evidence that would highlight Trump's unfitness. And we have no shortage of articulate and creative men and women to communicate in whatever medium they see fit. The problem is that a good chunk of the electorate is beyond persuasion. The solution then lies with the rest of the citizenry, which must rouse itself to vote Trump out. Mattis isn't in charge of the get-out-the-vote operation for 2020; that's up to the Democrats and all Americans.
We have no deus ex machina not Mattis, not Mueller, not the 25th Amendment and not impeachment. We have "only" our democracy. If we cannot collectively figure out how to motivate people to vote Trump out, we might have reached the point at which we are incapable of rational self-governance. I don't think we are there yet. In the meantime, we should stop pestering Mattis to turn over the silver bullet he does not have."
A similar thing can be said about Mueller. It's not that the Mueller report was an exoneration -- the report is damning of Trump and Russian interference. Greenwald and his ilk go too far! It's that its conclusions weren't strong enough. The Mueller report found no silver bullet that will slay the Trump monster.
Russiagate isn't a distraction or a fabrication. But it mustn't be the only approach to stopping Trump.