Did Zodiark ever do anything wrong?

[Iscah]

I will say though that hydealyns back up plan was pure madness. Shove a bunch of frightened people onto a ship where the slightest extreme emotion would result in them transforming into beasts... what would be more stressfull or emotional that fleeing the planet? IMO the moment that shop left Zodiarks influence they all would have turned.

Everyone already "left Zodiark's influence" the moment we killed him on the moon. That's what allowed the Final Days to start up again.

Anyway, I'm not certain whether Hydaelyn's stated evacuation plan actually was the plan, or just what she told the Sharlayans to get them to start building a spacecraft that was actually capable of travelling much further than the moon, without actually mentioning anything about Meteion.

Deneb III isn't suggested to be the Ea's home planet

The Ea mention two planets, both of which sound like they could be their home, but it seems strange one way or another.

This quest mentions a different planet called Sadr IV in a way that indicates this is a planet whose orbits they use to measure time by, which could be an astronomical observation of a distant planet or it could just be an overly technical way of saying "a year", i.e. the time it takes for their home planet to complete an orbit.

Meanwhile Deneb III is mentioned here as a place that the Ea observed to be affected by the Final Days, likely from start to end. So is it their own planet, or is it one they observed from afar before Meteion destroyed them as well, but these recreations are unaware of that later history? Perhaps it was the very first, making it an isolated incident to the Ea's awareness, with their own doom not far behind.

The lorebook doesn't mention their home star either way.