I agree with all of what Virginia had to say, but specifically these things, and very much point 2.
But, nonetheless, I agree on some other points:
1. Russia scandal is not important to people, at least in the way the economy/healthcare is. I wish it was, I wish people cared about the this stuff more, but they don't. However I think it still hurts Trump with voters outside his base. All these indictments and blunders like the Russia summit reinforce the idea of him being corrupt, and it probably maintains the energy on the left to a degree. Democrats don't need to campaign on this, they just need to let it play out in the background, and once in a while highlight the parts that matter.
2. Among the activist class of the Democratic Party, the word 'treason' is being thrown around too liberally. I can't help but think like they are fostering an environment of blind rage where conspiracy theories thrive.