WL partnered with journalists from all the world. Questioning if he himself is a journalist is rather dishonest considering he thinks himself one and he is responsible for millions of informative, ground-breaking articles written worldwide.
The Australian Journalist should not be concerned about precedent set in a US court against a US citizen.
Don't kill the messenger.
https://en.wikipedia.org/wiki/Pentagon_Papers
And all extraditions have a degree of politicisation about them so it wouldn't be at all abnormal here.