If the fire is moving fast enough, and they did say 80 MPH winds, the fire could continue from tree to tree and burn out behind it while landing on tar (shingle) roofs, etc.
Fall leaves, dry and brittle, are still on those trees. The trunks don’t look scorched. If it was a rapidly moving ground fire fed by ground litter, leaves primarily, then wooden structures would be at high risk, true, that makes sense. But, there are condos and such on mountaintops burned out, too, and they appear to be concrete or at least stucco. Trees standing with fall leaves all around them. Doesn’t make sense.