i wouldn't really expect that to be the case. we've got a lot more plastic furnishing/building materials now and perhaps there's tradeoffs but it's still basically just condensed oil. think of your couch as candyfloss gasoline.

most residential structures are wood frame, even apartment buildings are often just a few wooden-frame stories on top of a single-story concrete podium.

internal firewalls are probably the most significant improvement. you still don't want to be trapped on the wrong side of one with no way down.