But at the time of the choice, Adam was missing some critical information. Knowledge of good and evil was supposedly not there until the forbidden fruit was actually eaten, so hypothetically neither Adam nor Eve would not know whether eating the fruit was good or bad, or whether disobedience was good or bad, or even what "good" and "bad" meant. There's certainly nothing in Genesis 3 itself that suggests that Adam or Eve were warned about the potential effects on future generations, and IIRC the only Old Testament allusion to Original Sin is Psalm 51:5.
From a non-Christian point of view, at very least it appears that the Biblical god used questionable methods for teaching morality to his two brand-new humans. The idea of "Do what I command, because to disobey is wrong" also seems a bit subjective.
"The Lord God took the man and put him in the garden of Eden to work it and keep it. And the Lord God commanded the man, saying,'You may surely eat of every tree of the garden, but of the tree of the knowledge of good and evil you shall not eat, for in the day that you eat of it you shall surely die.'” (Genesis 2:15-17, ESV)
How much more information did Adam and Eve need? They were given the choice of obeying or not obeying, and they were given the consequences of disobedience. If you have ever raised any children of your own, how much information do you give a 2-year old in order to for them to begin making decisions for their own welfare?