That does happen, but I don’t recall any recently. Dragging safety chains and carelessly tossed cigarette butts are probably top of the automotive list. The grass everywhere is just so dry it only takes a spark and it’s off to the races. My neighbor to the north always mowed his grass scarily (IMHO) short and sure enough one year his mowing started a 10 acre fire. Recreational campers at the lake accidentally started a fire that burned 100 homes and traveled 20 miles to the edge of my property. We get lightning caused fires too, 2008 was a bad lightning fire year, but it’s the human caused ones that tend to stick in the memory 