However, omission and downplaying can also be harmful just like hallucinations. One redeeming quality of LLMs is that we can ask the same LLM to fact check its previous answer and they do tend to correct most of their mistakes themselves. Something we can't do with media sources, and usually don't try either.
LLMs along with existing sources can be good complementary tools for getting even closer to an objective truth than relying on either one by itself.