“Yeah, BS, unless he brought a net to capture fish with, or snare traps for rabbits, and materials to clean, prep, and cook these things with.”
And things wear out, and they break. Starts getting harder and harder, no matter how skilled you are.
Yes but you just need a 2 inch knife to start and someway to keep it sharp. Potable water is the big problem drink the wrong water and you are too sick to do anything. If you have some idea of local plants and animals you are ahead. Can’t build a fire modern tech will find it. But in that place even dogs will have trouble finding you.