The claim you refuted was whether Russians were involved, which they were. Regardless of the amount of classified documents, any new information wouldn't contradict the current public reports of Russian involvement in X. Whether they had involvement in Y is secondary.
> Blaming things on the Russians was another common thing during the cold war.
High confidence, about very specific things. Not all the things, i.e. the goalposts.
I'm not being mean, but honestly have a hard time understanding you. Can you explain what you mean in full sentences?
Your cited document covers a small amount of investigation not really answering his/her objections to labeling everything a Russian hack.
Nothing more to see here.