Thoroughly irrelevant. If there were conditions for a devastating fire it was only a matter of time before it started, it doesn't matter who started it. If no one did, add one more year and more combustible material will have piled up and it will be easier to start yet - and eventually, a tiny spark, or a cigarette bud, or anything really - could burn entire state.

Problem is fire-prone conditions due to poor fire prevention, not a random dude with a match.