Current speculation about the origin of the fire is centered on battery recharging, especially lithium-ion batteries which were most likely present. Perhaps it would be worthwhile to establish the cause of the fire as clearly as possible before advocating changes in procedures, criticism of the crew's training and actions, etc. None of us were there and we have no idea of the situation with which the crew had to deal.

FWIW, current news articles state that the victims probably died in their sleep, overwhelmed by toxic gases and smoke. The remains of one individual are still missing.
Geezer in Chief