It shouldn't. It's been extensively documented among modern human groups.
The major question is how much our understanding from recent forager groups applies to pleistocene foragers ("ethnographic analogy"). I'm in the generally skeptical camp. Many other anthropologists aren't, particularly those in older generations.
> pleistocene
The Pleistocene lasts from 2.58 million years ago, maybe the first time our ancestors figured out tools, to 11,000 years ago, when we Homo sapiens had been around for ~200,000 years. Isn't that too wide a range of humans and ancestors to characterize in one group?
Are you skeptical about 11 kya ancestors doing similar things? Why?
>It's been extensively documented among modern human groups.
Do you have some sources? A quick search doesn't pull up much evidence for current hunter-gatherer dependence on natural fire regime. Or you mean anatomically modern humans?