I am sorry, but your reasoning seems very confused.
I prefer to think that we are merely not seeing eye to eye on this, at all.
Why would our human ideas of how He should be, trump His own if a superior being?
Attributing an unfathomable, unrelatable form of "goodness" to the deity renders it meaningless. Calling such a being "good" only makes sense if this quality relates to qualities and values we recognize as such, else it is utterly worthless as a value judgment.
In short, this would render the Deity into the equivalent of a Lovecraftian Great Old One: utterly alien in its motivations and ethical principles, so remote and strange that it could devour whole planets without any moral implications within its own unfathomable code.
Re-defining goodness to mean whatever this alien entity does deprives the term of meaning.
To wit, let's imagine a far superior extraterrestrial species, in relation to whom we are no more intelligent than cattle, and who finds our flesh just as tasty as many of us find a good steak. From their moral frame of reference, incarcerating and killing us for food would be morally acceptable, seeing how we cannot even comprehend XPTL!Xt, and have a primitive nervous system incapable of experiencing Gh2TzLK.
Calling them "good" from our frame of reference would be totally out of the question, however. They would run contrary to anything associated with the term, and appear to us as nothing more than evil aliens trying to kill and eat us.
Besides, a benevolent God interacting with a bronze age people would hardly bring down the full plethora of modern progressivism without destroying that society and causing far more ill, assuming this even a laudable goal to do. You should rather be arguing with Jesus' ethical framework, as that is the pinnacle of Christianity, and refers to the fulfillment of the OT. If this framework is established in full, I cannot see much opposition to the label of a Benevolent God being responsible.
Ah yes, this old straw man.
We are talking about an entity who had so little qualms about interventionism and shaping society according to His will that He murdered thousands for depicting Him incorrectly, thousands more for a king who conducted a census at the wrong time, and wasn't averse to ordering the death of a person who was caught collecting sticks on the wrong day of the week. And yet, that same entity could not be bothered to abolish slavery, keep people from treating women as property, or laying down other rules for a society that outpaces the barbarism of the bronze age?
Nope, sorry, that does not fly.