... Hadn't considered that, but the entity was described as "deluded into thinking it's a god.".

Some old Duel Spirit, believes itself a god, apparently was involved in a fiasco at the airport, and it looks? looked? like Yuuki's wife.

I believe the concern is "they're not imprisoned, we can't keep an eye on them, ergo they could die."

I'm not sure. They did seem rather insistent I deal with the matter.