I do have grounds. My grounds is Genesis. This is what it says.
Gen1 humans were commanded to ‘be fruitful/multiply’ and to ‘fill/subdue the earth’. At the end God includes all He created, including these humans, in saying it’s “good”.
Then, in contrast to that, Adam is given one command and breaks it. This story is illustrating in a very direct way what is different about Adam. Gen 1 humans could never have done this.
In Gen4, when Cain voices his concern for being harmed by whoever he may encounter, God assured him he would not and marked him. The only way God could ensure him is if they didn’t have free will. They would not go rogue.
This story illustrates exactly what we see in history. Homo sapiens really did what the Gen1 humans were commanded. They populated and subdued the earth while remaining egalitarian, non-violent, and living in harmony with the natural world around them.
This changed with the introduction of Adam. All throughout the remainder of the story, from Adam on, God kept having to get involved. He interacts with humanity consistently, unlike He ever had to do before in tens of thousands of years of human history, because now free will exists where before it did not.
This is the shift we see in human history. Humans became male-dominant, as it says would happen after the fall, they become violent, as it says in Gen6, and they began building things that prompted God to say “nothing they plan to do will be impossible for them”. This is the same point when they began building cities and towers and everything else they could “imagine”. This shift in humanity happened 6000 years ago. Relatively recently. And right when Genesis says it did.
In the story being told, human behavior becomes God’s central concern from that point forward. Gen1 humans existed for tens of thousands of years and didn’t require all of this maintenance. He just created them, gave them their orders, and set them on their way.
If Gen1 humans were like Adam, could they have achieved what was commanded of them? Commands that took many generations to carry out? Would they have been called “good”?