It’s a made up toy problem. It exists for fun. The stated problem has some implicit assumptions. But you can rejigger the rules and assumptions to tweak the incentives and ethics. That’s the whole point. You could take the puzzle and apply it to a band of pirates held in a jail. That might make the outcome more obvious. Or you could imagine what would happen if the voting order were sequential. These are all just different formalisms that are fun to speculate over, but the rules can be interpreted many ways.

Yes, but those are different thought experiments from this one.