But all of those use cases are better suited for my voice and hearing sense. Bluetooth at crowded locations further shortens the range to the point id have to be within speaking range. If I was at a campground a wifi hotspot mode its probably even better suited (or ad-hoc wifi network on android devices).
Most of these cases make no sense unless your scared to speak with other humans.
I could see like on a college campus, or like a dense apartment building, but even then you'd probably use other apps, or go knock on your neighbor's door if the network is down. That said, even college campus have close circuit networks with redundancy, and we all have cell service. So a lot would have to go wrong, and again to the part where I go knock on the door of my neighbor.
I think I'm simply calling it a novelty and nothing else.
