With that said, a good RAG solution would come with metadata to point to where it was sourced from.
You can use Google to find you results reinforcing your belief that the earth is flat too; but we don't condemn Google as a helpful tool during research.
If you trust whatever the LLM spits out unconditionally, that's sorta on you. But they _can_ be helpful when treated as research assistants, not as oracles.
We've got to be careful to not let the perfect be the enemy of the good.
I'm not an LLM enthusiast, but I think you have actually compare it against what the alternative would really be. If you give the journalist a haystack but insufficient time to manually search it properly, they're going to have to take some shortcut. And using an LLM and verifying everything is probably better than randomly sampling documents at random or searching for keywords.
that's much easier than manually extracting the needle yourself