About the wildfires, they aren’t just caused by heatwaves, but also indiscriminate firefighting. If you stop fires in a forest over and over, the amount of flammable material keeps increasing due to new plants growing, and if there’s a lot of flammable material, and the same amount of water as before, things are overall drier, and would also create a bigger fire should one ignite.

And no, I don’t have a peer-reviewed study/source concerning this; I just used reasoning to construct this argument.