I tend to consider news reports more akin to a, “here’s what we know now” report than a, “this is the definitive explanation of what’s taken place.”

So in that spirit I agree with you. What this looks like, so far, is a sophisticated Russian attack. From here, we’re going to learn more, and that new info may change how we understand what’s happened substantially.

Though I will say I personally don’t care much that the source is anonymous, because I trust WaPo to vet what they’ve said with other sources. It’s not a perfect system, but it’s not like journalists are unaware of the groups trying to manipulate them.