I assume He wouldn't have done a great deal even were He were not bound. He didn't do a great deal to stop Fandaniel diving in and taking over, and that was after the seals were broken, and Fandaniel is at least as sundered as Zodiark.
The whole thing came across very much like Zodiark drops into stand-by mode and waits when He is without a 'heart'.
I think we've basically arrived at the same destination, just approached from different angles. Either way, the end result is we think it's unlikely that Zodiark was lying about the releasing Ancient souls as a cover to get more aether.
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They were constantly summoning primals. That should stop now we've made peace with them and got rid of the people that kept teaching them how to do it.![]()