The issue is that "pyschopathic genocide loving Venat who killed her own people because she hated thier culture so much" is not really a valid or insightful reading of the text. It requires asbcribing motivations and character traits to Venat that are not there. It can be your headcanon, sure. But it's not supported by anything in the game.

If you want to debate the morality of the sundering, you can do that. But it becomes wholly unproductive when all the discussiom keeps coming back to is mudslinging against Venat.

Also we're not talking about the Garleans or Emet-Selch right now, why does the fact that in unrelated conversations some third parties said things about Garleans/Emet-Selch have any bearing on how this conversation is conducted?