The most convincing proof to me that the Russians weren’t involved is that said Russians are not idiots:
Within seconds Trump was throwing punches, suggesting it would be a “tremendous blot” on the record of the intelligence agencies if they were responsible for leaking the now notorious kompromat dossier, which alleges that Russian intelligence has evidence of perverted sexual behaviour by Trump.
It’s been generally known for decades that Trump screws whatever he can. He’s been known to seat his wife (of the time) and current mistress at the same table at parties just for the joy of it. Kompromat of his having odd sexual tastes is not in fact kompromat therefore.
It doesn’t really matter what the odd sexual tastes are either. Golden showers or that he gave Michelle a blow job, doesn’t really matter. It’s just not compromising in the way that, say, an evangelist getting it on with a hooker is.
And people who do blackmail know this. Evidence that James Bond shags stunners does not provide a hold over James Bond now, does it?