Most of the wildfires making news in Texas are on the High Plains, otherwise know as "the Panhandle" to non-Texans. Virtually the entirety of the High Plains received well above average rainfall last spring and summer; it's not a true desert but there's a lot of 15 inch annual rainfall areas on the High Plains (less than 10 is "true desert in Texas). Some areas around Amarillo got well over 35 inches of rain last year and some areas much more.
Consequently we experienced something similar to California when they have lots of rainfall. We had lots more fuel in the form of dried plant matter than usual. We have wildfires across Central and West Texas every year and the causes are pretty varied. Around here welding fences or wind turbines causes a share as does shredded trailer tires and wheel rims dragging on the road surface. It is not uncommon to incur straight line winds capable of toppling wood power poles.
Biggest losses, so far, seem to be livestock. And, of course, the surviving stock doesn't have much to eat just now so there's a big effort to get hay onto the High Plains to hold them over.
I made the acquaintance of a dryland (no irrigation) farmer near Brownfield, TX 100 or so miles south of Lubbock when making my agronomy rounds years ago. He was exceptionally bright and was making it work with around 12 inches of natural precipitation annually. When I asked how much rain he got, and he told me, I remarked it didn't seem like very much. He agreed but added "But you ought to be here the day it happens."