Rapidly disembark is not a concept that I have seen on a wide bodied passenger jet arrived at it's destination, particularly with mixed nationalities and the tendency to have multiple items of hand luggage. I would suggest that it is improbable that the passengers leave behind their belongings to speed up the process, as we have seen from many emergency evacuations people still take their luggage with them. I can guess that watching more and more smoke and possibly flames rising whilst there is little forward movement of the queue would cause great anxiety for passengers and rear cabin crew.
Sometimes you may like to also consider life at the back of the cabin, it's a different world than the front. I am just a humble techie who get's sent out on the cheapest seats so my view is very different from the pointy end.