I have mixed feelings about responding to this -- partly because I doubt it would do any good, no matter what was said, and partly because seeing the answers to your questions necessitates taking a step beyond the merely dialectical.

What you call "blind obedience" is only that from the dialectical perspective. As an example of the alternative: suppose someone you loved who also loved you asked you to do something crazy, risking your life in order to save it. "Let go and give me your hand, and I'll pull you up," or something to that effect. What would make you do as they ask? Blind obedience? or trust?

Why would God, knowing Adam & Eve would violate the one commandment given them, create them in the first place? Why not simply create robots? Because love requires freedom of choice.

And, as for the serpent telling Eve the truth ... The most effective lies are the ones sprinkled with truth. When the serpent told Eve she would become like God, that obviously wasn't true; but the statement that she would know good and evil was half-true. It's like taking drugs. "Take this; you'll feel so good," or, "Drink this; you'll have such a good time." The reality is somewhat different. Suppose the serpent had said, "Eat this, and you'll know what pain is." Eve, having no knowledge or context for pain, but only hearing that knowing pain would make her like God, could have been tempted and done the same thing. Only later, when it was too late, would she have understood what she had done.

The picture of God painted by the Old Testament is open to multiple perspectives. One is that, as time passes, the understanding of God becomes increasingly nuanced. In the beginning, God is understood in very legalistic, uncompromising terms; but, as time goes by, the image of God softens. "In the fullness of time," Jesus comes and manifests God in human form, giving man his fullest understanding of who God is and His nature.

Judaism and Islam are two religions born of the desert, a harsh and unforgiving climate. I wonder sometimes to what extent that shaped their initial appreciations of God. Islam wasn't always limited to Wahabism, you know, and isn't even today. Evil always seeks to pervert what is good.

I hope this is of some use to you.