I'm going to give you a humanist perspective throughout this reply. For the humanist, whatever good people do is also because some people choose to do good.
If that were true, then by humanist standards, God is also responsible for both the disease and human malice he created. I suspect that that is not the thinking in Christianity, where one begins with the assumption that though God is tri-omni, he is not responsible for any bad or harm. That forces the believer to either try to say that what appears harmful is actually a good thing, or that God isn't to blame. That's the problem with belief by faith when evidence contradicts that belief. One now has to argue to not believe one's lying eyes. You didn't see what you thought you did, you are told, because that's impossible, so there must be another explanation that finds God blameless.
This is a teaching we see from the faithful that I think is destructive. It's also antithetical to humanism, which sees man as having great potential and being man's only benefactor. Abrahamic religions thrive because of a few destructive principles, this being one of them: Man is evil and all good comes from God. Another is that we are hopeless and utterly dependent on God's mercy. Another is that faith is good and the "wisdom of the world" foolish. There's an entire other way of thinking that sees potential in mankind and encourages humankind to be better intellectually and morally.
I think by abusive relationship he was referring to something like what I just described. It's a dependent relationship with a huge imbalance of power, commands are given and must be obeyed or else, and where you're always wrong (evil was your word) and the god's always right
Why inject a god at all? None seem necessary for any purpose. Isn't nature sufficiently sacred even if its unconscious and godless? In a naturalistic worldview, nature is our sustainer, and though it can be harsh and dangerous, it is not malicious. As soon as one creates this persona with orders, separates it from nature, and declares it superior to nature, you have made nature and its contents including man this god's toy and passing idea.
Except God, right? And consciousness. Or do you think God created himself and created his own consciousness?
You have special rules for gods, but don't explain why they should have them. Nothing else can exist without a god but a god. There is no reason to believe that even if its correct. You couldn't know. Many believe anyway, but many others reject such special pleading for gods.