The point that needs to be made is that current regulations, immigration and airline policy reward or at least encourage passengers to take their bags with them in an emergency. Examples I have read on this site over the years include:
1 - A crash landing with no fire (Asiana in SF????) where it took three days to return bags to passengers.
2 - A slide evac where passangers had to wait half a day in the terminal without any food / drinks provided to passengers who did not have any money / cards
Then, what happens when you are some nationality like Chinese or Indian and you land in the US and the plane does burn. Good luck proving anything to immigration!
The fact is if people are punished like this for doing the right thing, then nothing anyone can do will stop them from doing the wrong thing. That is human nature. The solution is to change the systems not just blame the people.
This is still an attitude problem. Passports and money/cards can be carried on your person. Then, if you value your clothes/tablet/toothbrush more than your life, or someone else's... That's wrong priorities no matter how you spin it.
Anyway, I agree with a previous poster that this is all worthy of it's own topic instead of here.