Getting people to distrust the news was one of the first moves when the current guy started running. And it not only worked for his own people but it also worked for people who don’t follow him.
Just say “msm” or “mainstream media” with a sneer and you’ll get agreement all around. It was a successful bit of propaganda because like much propaganda, there’s kernels of truth that are actually “nothingburgers” when you look closely but enough to get people to look past them to other “odd” sources instead.
Comes down to standards, regulations, inspections, independent verification. For that you need government.