You're mostly right. Sometimes it a broad brushed range over a larger area. But BTV does a better job than most at talking about details down to specific areas of the mountains.
I'm actually trying to get better at drilling down to those finer geographical points in my discussions, but it's hard to put that kind of detail into the forecast and still have time to get it out. You could spend all day crafting a perfect forecast for Stowe, Bretton Woods, or Newfound Lake, but those are all just one grid point of thousands.