And therein lies the rub!
Based on your subjective choice of whose mythology you accept as your god, all its actions become “moral” in your sight. Just as you equated the slaughter of the infants by a man who heard another man say that his god wanted him to do it, as “moral” since you chose to believe this is what your chosen god wanted, so too can a Muslim make arguments about the violent commandments in the Quran.
Ultimately, it’s all subjective and the acts of your god become “good” just because you’ve retroactively chosen to define what “good” is to allow this chosen god of yours, a moral pass.
I’m not entirely convinced this is coherent. You seem to have the process ass backwards. It’s not that I have chosen to define what good is. Good... IS GOD. I cannot judge good from bad on an objective level any more than you can. Of course it’s not subjective, because I didn’t write the law that says “you shall not bear false witness”. God did. If I had written this law, it would be a subjective one.
If it was as you say, my religion would have 100s of commandments, because it would be shaped around what I want, but it isn’t. It was shaped long before me by God. I have nothing to do with it.
“So too can a Muslim make arguments about the violent commandments in the Quran”
You seem to think this is some sort of good point, when really it isn’t. If Islam is the true religion, and the true vision of God’s nature, then yes, Muslims would be absolutely justified to follow those words in the Quran...
But I don’t believe Islam to be true, and I don’t think the arguments for its truth are very convincing, just like atheism’s arguments. For instance, I don’t think “Allah” has the same great making properties as the Christian God. He is not all-loving. This is a deficiency no god should have.
I’m not sure why we’re continuing. You hold a deep-seated belief that there is no God, and I hold the opposite to be true. It’s hardly likely we’re going to agree on anything in this field.