The data comes from somewhere, and I'd really like to see data-engineer-journalists be a bit more skeptical about where that data comes from and how it was collected / sampled / modified before going into visualisations.
I think that's the one part of the journalist's toolkit that hasn't made its way into the coding side yet - the ability to step back and say do we trust this data? How do we verify? Can we talk to the people who collected this? If it's collected by a government agency, under who's funding was this done? How do we fact check a graph that composes of an aggregate of population statistics, for example?
In old school narrative journalism, someone (usually an intern) calls up all the sources, looks into the government departments who gives the stats, tries to find third parties from universities or other non-related parties to cross reference ideas, statements, facts. How do we do that in a data driven world?
It's a good angle and someone ought look into it. Potential for more data-driven stories.