I’ll put in my 2c in favor of the Bushbuddy for the desert environments I hike in, which include the canyons and high deserts of SW Utah and the high deserts of WY-ID-CO.
Yes, “wood” is limited in these environs. We don’t need wood to fuel the Bushbuddy, however, we need fuel.
Desert fuels in the abovementioned environments are plentiful, and include: dead grasses and (downed and) dead cacti stalks, sage, pinyon, cottonwood, and tumbleweed.
For the traditional firebuilder, these might all be considered “junk fuels” (except pinyon and cottonwood) but that is exactly why the Bushbuddy excels – its efficient firebox design means (a) you need less fuel and (b) you can use junk fuels to concentrate a lot of heat (flame) to the pot.
Fuels that create flame are preferable to fuels that burn slow and long (coals) which is counterintuitive for fire cooking unless you are simmering.
It’s amazing what you can find if you get on your hands and knees. Posted at my recent packrafting trip photo gallery is one example of an alternative fuel for the Bushbuddy that we used to boil our morning coffee recently.