Assange can't even get a hostile media to report what
he said correctly. The idea that he is running a propaganda campaign is as fantastical as the idea that you are running your own personal propaganda campaign.
Assange cannot frame narratives, suppress journalism or push talking points through media outlets under his control. He didn't control anything except one twitter feed.
The only thing that people really pay attention to and the only reason he has a platform at all is because of what he leaks. Most people don't even have any idea what his opinions are - although the effect of the leaks is felt far and wide.
This absolutely SHOULD be seen as an ideological clash between proponents of journalism (it's not even about freedom of speech, it's about freedom of journalism) and war hawks. And taking the side of the journalist murderers? Not a good look.
It is that simple and you can tell it's that simple because Assange is getting prosecuted for exposing the murders and the murderers are going free and nobody even disputes (except in a very legalistic sense) that they were murderers.
The idea that he's a stooge for Russia? There's your propaganda - it's pretty much no different to the red scare of yesteryear.