I think this is a naive and unrealistic perspective. Journalists coordinate with their preferred candidates all the time to gain better access. They shouldn't but they do.
(And, whether wikileaks meaningfully coordinated with trump campaign is debatable)
>Journalists do not coordinate news releases with their preferred candidates
That's basically a press conference, which are both a mainstay of journalism and you'll see particularly well connected journalists leak what a press conference will be about before it happens.
The issue there was precisely how he was emphatically not acting as a journalist.
Journalists do not coordinate news releases with their preferred candidates.
Political operatives do.