This has been repeatedly debunked. Crowdstrike, who was hired for the security audit, states very explicitly that their IR team had proof that COZY BEAR and FANCY BEAR had breached the network.[0]

> To reference, CrowdStrike’s account of their DNC investigation, published on June 14, 2016, “CrowdStrike Services Inc., our Incident Response group, was called by the Democratic National Committee (DNC), the formal governing body for the US Democratic Party, to respond to a suspected breach. We deployed our IR team and technology and immediately identified two sophisticated adversaries on the network – COZY BEAR and FANCY BEAR…. At DNC, COZY BEAR intrusion has been identified going back to summer of 2015, while FANCY BEAR separately breached the network in April 2016.”

0: https://www.crowdstrike.com/blog/bears-midst-intrusion-democ...

OP is talking about collusion and the years of investigations and other nonsense.

You're talking about an ineffective hack that's used for scaremongering, that was caught and had little to no effect on the out come of the election.

There were extensive contacts between the Trump campaign and Russian operatives. Even the (bipartisan) Senate report on this states that much. There is nothing nonsense about it.