Prosecution did try early on to paint Assange's work as something other than journalism. They've given up on that line now as it was very weak. Did you see this, for example, from the testimony of investigative journalist Nicky Hager.
'[Prosecutor] Lewis: You have as a journalist merely been the passive recipient of official information. Presumably you have never done anything criminal to obtain government information?
'Hager: You said “passive”. That is not the way we work. Journalists not only actively work our sources. We go out and find our sources. The information might come in documents. It might come on a memory stick. In most cases our sources are breaking the law. Our duty is to help protect them from being caught. We actively help them cover their backs sometimes.'
https://www.craigmurray.org.uk/archives/2020/09/your-man-in-...