Interesting paper, thanks. It does make some of the same distinctions I did, around smokers and smoke alarms. Another thing mentioned about newer construction is the improved blocking and stopping. For example, one old style of framing was "balloon frame" construction, where you would have gaps that might run vertically from basement to attic. That gave fire a channel to rip vertically through a structure, and is clearly a terrifying idea once it catches. [Edit] Oh, I forgot to mention, it also discusses what conclusions can't be inferred. "Regrettably, much of the available data is not helpful. For example, no data are collected on the age of the structure where a house fire death occurs, despite the obvious link between the two."

The starting point of this though, was the idea that the materials in the house are actually better than in the past. To the extent that they'll tolerate fire longer before collapsing, they aren't, and the gases from the foam cushions, carpets and drapes are more toxic than ever. The reason this was drilled into our heads is that it means less time to get into a fire, and someone out, before we all have to leave for our own safety.