The new Boeing read-and-do evacuation checklist takes a lot longer than the previous memory drill. But I make that external video 4 minutes without an evacuation call. Not good with that size of raging fire (any fire).
The trouble would come when the fire engines run out of foam, like they did at Manchester. I did not see a foam tanker ready to reload the fire engines (or do they have runway reload points?). If the engines had run out of foam, that fire would have reenergised itself in a trice. With the passengers still onboard.