There is familiarity aspect for sure but also that living conditions don't change that dramatically over human lifespan. Life two generations ago was different

There is familiarity aspect for sure but also that living conditions don't change that dramatically over human lifespan. Life two generations ago was different but not so terribly different as to be uncomfortable to a modern human. However getting used to lifestyles of some centuries ago, let alone back to neolithic would be substantial complication.