Actually no, its not. In fact, evidence comes from other sources, including multiple intelligence agencies (including foreign ones).
https://www.bloomberg.com/view/articles/2018-01-26/release-the-dutch-evidence-of-the-dnc-hack
And we should believe him why? He has never provided any evidence that the hacks were perpetrated by someone else.
Lets look at Assange's background, shall we?
Assange:
- Has worked for Russian sources before (He was on a TV program that was sponsored by the Russian government. See:
https://www.vox.com/world/2017/1/6/14179240/wikileaks-russia-ties)
- Has shown an extreme dislike for both the U.S., and Hillary Clinton in general, so supporting a russian-backed effort to install Trump would kill 2 birds with one stone. In fact even former allies of Assange have raised flags about the way he focuses on the U.S. and its allies and ignores many transgressions involving Russia
- Was visited multiple times by a Russian Oligarch who has since been charged. (These visits were recorded in visitor logs for the embassy where he is staying.) Now, nobody knows what was discussed during the visits, but it does raise some concerns.
https://www.theguardian.com/media/2...h-visited-julian-assange-nine-times-last-year
- While the data dumps that Wikileaks releases may be accurate, Assange does have a habit of being rather duplicitous personally (in the embassy he is living in, he has been found breaking into secured rooms, reading personal files, etc. Then there was the claim that he would turn himself in if Manning were released, which of course he did not do. Plus, he's stuck in the embassy because he himself lied to British authorities and skipped bail.)
So what is more likely: that multiple (independent) intelligence agencies were somehow wrong about Russian involvement, or that an Assange (an individual who has the motivation to see Trump win, a history of Russian contacts, and a track record of dishonest behavior) would be lying about Wikileaks involvement with the Russians.
Perhaps if Assange actually provided evidence that the source was not the Russians that evidence can be judged on its merits. But at this point we have no reason to accept Assange at his word.