I muss say that I am a surprised by what seems a relatively minor fire at evac time escalate into a complete hull burnout, including apparently one fire firefighter being killed.
No idea what happened here (was that the slide exploding ? Cargo ?) but clearly they simply did not manage to put the fire out, despite (most likely) having ample equipment. Not criticizing in any shape of form, but there will be most likely interesting conclusions from the fire fighting aspects of this accident.