It's honestly astonishing how well the A350 held up for evacuation, which supposedly took 10 minutes. This is the first hull loss, and it actually improves the safety record.
Well, yes, the plane did burn down almost completely. The quote I heard that complimented it wasn't that it wasn't flammable, but that it (again, allegedly - I'm not a material scientist) insulated the interior from the fire outside for long enough.