"First, the discussion is about about news, not science (nor about general LLM behaviour)."

That's a false dichotomy. Consider energy policy. What kind of power do you need to add to your grid? What are the risks for each type of power? How much CO2 does each type of power emit, etc? These are scientific questions which directly impact public policy and are consistently misreported by news sources.

So there is no line between these things. It is however an area which where accuracy can be measured. And when we do that, its hard to argue that allowing journalists without technical credentials to continue to have a platform is a good idea.

And I can make the same argument about several other topics including military matters. Literally, the 2 weapons systems the media hates the most have the 2 best track records on the battlefield. They aren't just wrong. They are literally the opposite of correct on many topics.