Until you have walked through a modern fire nuke zone. It’s like walking on the moon. Nothing under a foot across is left. This picture is very typical of what is being left behind by the large self sustaining fires.
https://images.app.goo.gl/jcLatNG6dAdpoALY8
Source: Spent 10 years as a wildland firefighter on major fires my whole career. And still have friends and family that are deployed on fires today.