You're conceptually wrong about "the theory" and factually about the majority of fires.
The fundamental connection increase of CO2 => increase in mean temperature => increase in frequency of high-energy atmospheric events is entirely obvious and well established.
CO2 traps heat and heat is energy. Firestorms are an immediate consequence of that and accordingly rise in frequency as well.
The idea, such fires would be "preventable, since due to individual human action" is patently absurd even in principle. You cannot easily ignite a forest that isn't dried out.
An easily ignitable forest on the other hand just waits for the first spark, no matter the source. The hotter climate provides more sparks in the form of lightning. At some point, ignition is virtually guaranteed. And that point is reached already.
The fundamental connection increase of CO2 => increase in mean temperature => increase in frequency of high-energy atmospheric events is entirely obvious and well established.
CO2 traps heat and heat is energy. Firestorms are an immediate consequence of that and accordingly rise in frequency as well.
The idea, such fires would be "preventable, since due to individual human action" is patently absurd even in principle. You cannot easily ignite a forest that isn't dried out. An easily ignitable forest on the other hand just waits for the first spark, no matter the source. The hotter climate provides more sparks in the form of lightning. At some point, ignition is virtually guaranteed. And that point is reached already.