Climate change? No. Natural cycle of nature.
https://www.npr.org/2020/08/24/899422710/to-manage-wildfire-california-looks-to-what-tribes-have-known-all-along
Before 1800, several million acres burned every year in California due to both Indigenous burning and lightning-caused fires, far more than even the worst wildfire years today. Tribes used low-grade fires to shape the landscape, encouraging certain plants to grow both for tribal use and to attract game.