It’s not clear these passengers didn’t grab their luggage at about the same rate as on any other accident. They might be better behaved, but somehow I doubt it was much different.
Dedicated thread already started here although I don’t know how much legs it’ll have beyond a bunch of breathless “Oh my gosh; glad they’re safe” comments:
Land-on-top accidents aren’t that rare as accidents go. Here’s a famous US one I recall:
One of the procedural changes made in the USA after that was to prohibit controllers from positioning an airplane on the runway ready for, but not cleared for, takeoff during hours of darkness. The intent is to make it easier for the controller to see a forgotten plane sitting there and for any landing plane to see it easily as well.
They also added a procedure that during the day when clearing somebody to hold on the runway, to explicitly state why or what you’re waiting for and about how long to expect. Intending to enlist the crew in watching for the appropriate events or passage of time and raise a question if they’re still sitting there much after that.