While is spent my career in the IT field, I’m no expert on hacking. All that being said...
It would seem to be very easy to believe that that any state actor could leave a false flag “footprint” (if any) behind during or after a cyber attack. I recall news articles about this very process just as this whole goat rodeo was brewing.
Our intelligence apparatus seems to be particularly adept and swallowing camels and straining at gnats. We are supposed to believe the same bureaucracy that spawned Strzok, McCabe, Brennan, Clapper, Comey, Lynch, et endless cetera? Who can be absolutely Clouseau-like when presented with clear intel on the FL high-school shooter and the Tsarnaev brothers? Really? When the political stakes are this high?
Nope, nope... nope. We indicted those Russkies for something, let’s present the evidence, go thru discovery, and try ‘em. If we don’t, than this is all political theater by the Deep State.