Doesn't help if information is contextual. E.g. if I say, sun rises from east. That's a statement with context "on earth, as far as humans notice from earth". Sun doesn't rise at all if context is changed to "in space".

We can solve "trustworthy sources" issue. We can't solve contextual errors. That's why legalese is so long winded. At least, for now, context will always be an issue for these AI programs. Maybe some day we will figure out how to code context, but it is definitely not happening right now.