Egypt had stone weapons and were violently brought into the bronze age by the Hyksos invasion.
Egypt was well out of the stone age by the time of that invasion. Whether some weapons or tools may have been made of stone doesn’t make Egypt of that period “stone age” any more than the fact that some Renaissance cannon used stone cannon balls or that 19th century flour mills used grinding stones made those societies stone age.
I had great grandparents who did a lot of archeological work relating to Indians in the Northwest. Their collection, which weighed tons, was donated to museums. I was around those artifacts for years, and I assure you that pre-Columbian Indian culture north of the Rio Grande was unbelievably primitive. These were people who lived in relatively favorable conditions and were still always on the edge of starvation.
Before the leftist historians and others got hold of the media and academia all pre-Columbia estimates of Indian populations north of the Rio Grande were in the range of .5 to 1.5 million. Even those estimates were generous given modern experience with surviving stone age cultures. 20 million is preposterous. 100 million is a cynical lie.