Well, now we know why the voter rolls were hacked.

[mythology]

8. Present even the slightest bit of evidence votes were changed

Until then, it's just as unsupported as Republicans claiming in person voter fraud is a thing. You'd also have to explain how the counties in Wisconsin that hand recounted didn't differ significantly from counties that machine recounted.

Also actually changing votes would be a direct thing, relatively easy to prove the impact. Instead using subterfuge and psyops lets Russia maintain a certain amount of deniability and even if caught, there isn't a direct impact that would run the risk of causing a harsher response. Instead they worked on people who were already open to voting for Trump or against Clinton, but you can't directly prove the impact. People generally don't want to admit to being manipulated, so they will deny it and thus Russia wasn't at fault in their eyes.