Living off the land like this is routinely taught in military SERE training.
I’ve eaten cricket, ants, and grasshoppers and I know insects are a good source of protein. However, set a bowl of crickets in front of me and a medium-rare ribeye, the ribeye’s going first. Take away the ribeye and, if I’m hungry, the crickets are now on the menu.
My nephew was on Marine Field Exercises at the Mountain Warfare Center in the Sierras and they caught a goat. They told the female trainee that it was dinner and she was tasked with killing and gutting it. She couldn’t do it. It must have been real interesting when she said “no.” Eventually she caught on it was her job.