Summoning primals is bad for the land in general and neither Hydy or Zodiark should've been summoned; regardless of where their intentions fall on the benevolence scale, another solution would've been better. I think Azem knew this, or at least suspected it; perhaps from getting out and about and seeing how things are they were able to discern something that gave rise to their suspicion.
Frankly, H & Z are a result of a group of people failing in their overall duty by not doing due diligence in a timely fashion. Pretty sure if both H & Z want to save the world(star)/its peoples, they both would realise how destabilising they themselves are. Perhaps that's why Hydy's touch is incredibly light (no pun). She still has a directive to protect the inhabitants of the star and all the shards thereof, but knows she's also incredibly bad for it at the same time, and yet still she can't self-delete (if she can do that at all) because the safety of the star is still not assured. I imagine that to be torturous - to love your "kids", but know you're killing them by simply existing, but can't delete self because of others trying to kill your kids. A hibernation of sorts may be all she can do whilst fighting her directives, with the bare minimum to ensure kid safety. I think Zodiark would likely be of a similar bent. Or rather, I personally choose to believe he could easily be as benevolent as she, just with different directives and unfortunate (to say the least) consequences to those who summoned him and all who believed in
them. My jury is still out on how much tempering Hydy does, but I find it difficult to believe she doesn't do it. I can't be comfortable with that. Any messing with free will for any reason isn't something I can acquiesce to.
My hope is we can somehow unite H & Z in a concordance without negative repercussions - I know tempering can effectively be cured at this point, but these two are the big ones, so to speak. Either reunite them in peaceful accordance, thus retaining a protection for the future, or dispense with both of them - which they would agree to, but still fight against, per programming. I'd really rather the former because all the death is just too much; I'd rather use words and diplomacy much more often, but I don't think that'd work here. I will be preparing cake and grief counselling in advance regardless. Seems prudent.
So to conclude, I don't think either H or Z are villains in and of themselves, and it's all a horrible mess and there will be cake. And I mean, I will legitimately bake a cake for the expansion finale. My whole family's going to need it.
Whatever way it pans out, it's ultimately a caution in sitting by and thinking things don't truly matter if they happen somewhere else to someone else, then becoming overwrought with fear when the error is realised.