I think Otzi would have a lot to teach us. He seemed to have his every day survival down pat. It appears his last attempt was to drop everything he could replace and just keep his EDC (belt w/ pouch) and his birch container carrying his ember. If he was not slain he would have probably had no problem crossing the mountains.
I find stories about Otzi and Ishi to be very educational. They both were capable of surviving the "stone age" even though Ishi lived much more recently.

I now get that you were joking about Otzi; yes dead people are not great survival instructors unless the dead can talk. Then they could tell us what they did wrong or what they could not overcome.