Mafia 82. Retribution

Is that the reason?

If you look at who has defenses in the setting, then yes.
Of course, Nebo is right about the re-descriptions, but that just means we need to find other options. But I haven't seen any of our fellow players answer my question.

1) he was healed one of the nights

The healings are displayed, but Nebo's nickname didn't appear in the newspaper even once from the first night. Or am I mistaken?

he was killed by Gadky

That's a possible scenario, but Nebo knows best whether he's alive or not. And why would Gadky kill someone who is almost dead anyway? Did he want to break the Lord's night invulnerability? And wasn't he afraid that the mafia would set a trap for Nebo?

he's a bandit and didn't die because of his ability (though, does it even work?)

That's the gist of it. But we need to ask Revan, yes. Revan, does the bandit's ability work against the Lord?