Curious. If he was shot in the pit where he was found, I would have expected the body to have been looted. The copper ax especially would have been valuable. Even his friends would have taken that, and his enemies certainly would have.
Might have been a murder victim from someone from his own tribe. Turning up at home saying ‘poor otzi, he got lost in a storm. I did everything i could to find him but no luck’ whilst also having otzis valuables would look a bit fishy.