For as long as I can remember whenever I'd have the option to ask 'What's new?' to a vendor in Fallout 4, they'd always say they haven't heard anything and insist we go back to talking about bartering.
Do any NPCs actually ever have information to share? If so, who does, or do I have to do something to give them something to talk about (ex: I become Minuteman General which causes vendors to then say "I've heard the Minutemen are coming back!")?