Absolutely. That's what you see in the videos. Finally one person starts really running, and it prompts the others.

I think of it as the National Park discontinuity: few people these days have experience being in environments that can be rapidly lethal.

And there isn't a sign in National Parks saying "Past this line, there are apex predators, dangerous natural features, no cell phone service, and/or the nearest medical facility being a backcountry airlift away."

That's a big change from most people's everyday normal.