from extreme Narcissism...which means that the root cause is oddly enough, extreme insecurity. When challenged, especially with facts, he becomes very animated, irrational and aggressive...but you've no doubt figured this out already.
Leaving Baron to the side...are you at all familiar with the fellow in this video from YouTube?...apparently he has experience in the management of wildfires and in a nerdy way goes through maps, etc. related to the L.A. fires, giving his thoughts/perspective.