Question from a non(-professional) pilot:
From the video, the evacuation is on the taxiway. If an evacuation is required, wouldn't they want to stop as soon as possibly and evacuate on the runway?
It seems like the runway is shut down either way, given the passengers and equipment in the area.
This is curiosity not criticism. I recall a recommendation in a Canadian TSB report a number of years ago on a 737 engine fire on takeoff in Calgary.