I think something went wrong in the machine that's why it's spitting a lot of money. If so, then the guy shouldn't get it coz it's a form of stealing. One of our bank who support cryptocurrency has build btc ATM but i haven't try it personally. Hopefully there will be mass adoption here and hope they make lots of BTC Atm.
Indeed, what you say is true should do a wise thing not to accept something that is not his right because of a system error. but it is indeed very difficult to unite perceptions not to do things that are forbidden if someone has overtaken them. most of them follow things that have already been overtaken.