Only one problem with that........there is no evidence to suggest there was a hunter-gatherer past. The only record we have is the Bible, and it doesn’t account for it.
BTW, the Long Hunt wasn't mentioned either but we know that's how the Iroquois and other American Indians handled the winter starvation problem.
Frankly, I think somebody just forgot to write it down for you.
There are still a few pockets of hunter-gatherers so they still exist. The inhabitants of the Garden of Eden were hunter-gathers. Because they didn't know any better their idea of paradise was eating fresh worms from a stick. The Garden of Eden was not our modern idea of paradise.
We are all proof of a hunter-gatherer past, the fact that the hunter-gatherers had to survive to procreate. How do you think people survived?