This is not really news. Many of the current fires around the world are caused by human stupidity. In Nature, lighting starts fire in a cleansing process. Authorities do their bet to stop them, not to protect Nature, but human habitations built where they were never meant to be.
SFGate.com links to a 2017 study published by the National Academy of Sciences that notes:
Public dialog and ongoing research have focused on increasing wildfire risk because of climate warming, overlooking the direct role that people play in igniting wildfires and increasing fire activity. … Human-started wildfires accounted for 84% of all wildfires, tripled the length of the fire season, dominated an area seven times greater than that affected by lightning fires, and were responsible for nearly half of all area burned.
More @ Stupid People Start 90% of California Wildfires: Study | Breitbart