I have a lot of antipathy towards the passengers who are getting out with their backpacks; if one takes the time to pick up their stuff they are probably in the way, take more time getting out, and could cause the death of other passengers or staff.
I think you should acknowledge that you and the person above are reading this sitting in a comfortable chair (or on the toilet), with little stress, good time to think, and the magic power of hindsight.
People just having been in a crash, however, are in a different situation. They've just been thrown upside down, having to release their seat buckles and fall down onto the roof, then being ushered out in panic. Them not behaving perfectly rational should be excused.
The way we increase the chances that everybody reading this will behave appropriately if they're ever in this situation is by strongly condemning those who did not.
