Earlier quoted context omitted.
I don’t see any basis it could be disputed in the case of the diplomatic cables. This very witness’s testimony proves it (as his torture and subsequent efforts by the US to pressure Germany and Spain to take no action when the criminal nature of it was learned - it was only brought to light because of the leaked cables, as explained in this post). These facts render it moot what you or I might personally think about…
My point isn't that there's no useful content in the cables; my opinion is that it wasn't screened well. The data was dumped, not carefully screened. Assange M.O. changed in that regard, somewhere in the past 10 years, and that is the moment where I started to believe his opponents had a point. > In the case of the DNC email leaks, I could see a better argument that it was political, but then it also wouldn’t matter.…
The testimony of John Sloboda of Iraq Body Count (which deeply depended on Wikileaks materials to corroborate many illegal civilian deaths in the Iraq war) is particularly clear on this. He had direct knowledge of the processes Assange used, in conjunction with other major news agencies including the New York Times and The Guardian, to redact as much identifiable information as possible, and even revealed significant details about the software they built to do named entity removal and to extract entries from dictionaries and so forth, across tens of thousands of documents.
It is pure myth that Assange lacked careful, discerning effort to redact materials.
As for your response about the DNC emails I think you have it quite backwards. Assange did not destabilize any election or play any role in Trump being elected. The DNC did that by the behavior that the leaked emails revealed.
The DNC members destabilized the election and created uncertainty and outrage that Trump capitalized on. The DNC members and officials did that, not Assange.
Assange reported it.