I'm confused by what you are trying to say, Lead Balloon, unless it is having a swipe at Flight Service Officers.
From my experience, FS (as ATC now do) gave relevant traffic information based on their assessment and within AFIZ's, that included NOSAR and gliders, because within 15NM all traffic was full reporting and therefore required to make themselves known @ 30NM.
Vastly different from what a refueller, baggage handler or check-in staff could provide.