One thing I've never seen any pro-paleo person explain to me is which stone age culture they're trying to emulate. Ice Age Europe was not steady but fluctuated between warmer periods and colder periods over thousands of years. There were times with more forest and times with less forest and more grassland, etc. All of these would have changed the diets of the people living there.
I see paleos typing about "Grok's time" but they never define what that is, what the climate was like at that particular time, what the people were eating at that particular time, etc.
They don't even define which of the many subcultures of Cro Magnons they're trying to emulate. Was it Aurignacians? Gravettians? Which one did "Grok" supposedly belong to?