I think you misunderstand what journalists do. Journalists are not supposed to be experts in the subjects they cover. They are not telling you the story based on their personal knowledge or beliefs — those are opinion pieces.
Journalists are expected to source information from experts and from people who are in positions to know, and to attribute the information they publish to their sources.
I am not saying that every journalist or publication does a good job of seeking the truth. Only that the job of a reporter does not require being an expert at anything other than - hopefully - information gathering and reporting.
This is how the news gets fooled again and again. They believe an “expert” who came to them with an agenda. It’s often willful as long as the narrative fits their own
That is why the old adagium one source is no source is valid.
Look up how Rian van Rijbroek fooled a popular news show in The Netherlands. If they had invited one more random expert in the field, that person would've grilled her.
To be fair, journalists are meant to also use their own knowledge and judgement to assess the relative validity of sources and frame the story in a way that communicates the truth as they see it (as opposed to just uncritically reflecting whatever their sources told them)
Journalists are expected to source information from experts and from people who are in positions to know, and to attribute the information they publish to their sources.
I am not saying that every journalist or publication does a good job of seeking the truth. Only that the job of a reporter does not require being an expert at anything other than - hopefully - information gathering and reporting.