> People with bags [...]
SHOULD NOT HAVE HAD THEIR BAGS. END OF STORY.
You say yourself the last survivor existed after 55 seconds. Did bag carriers cause even a two second delay? Could one extra person have crawled out from the smoke before succumbing? Perhaps that 12 year old girl?
You (and I mean anyone but if you fly I literally mean you) should not be making these sort of calculations when deciding to carry or not carry. Do not carry. Exit.