YECs are fond of a literal bible, indeed. But close to all Christian churches teach that Man is fallen, don't they? And why? For eating the fruit, following Paul's remark.You sound like you are doing what many skeptics do when discussing Genesis creation. Your attack is against the young earth creationists and you start saying that the text can only mean what the young earth creationists say it means.
But none of that is in the story. In the story there is no mention of 1000-year days ─ Genesis 3:22-23 directly contradicts any notion that Adam and Eve were intended to live forever ─ and spiritual death is never mentioned or implied. That's a Christian notion from more than a millennium later.The King was making a judicial decision and judgement about a person.
The judgement and judicial decision of God is the way I see the "same day" and that has support in other parts of the OT as shown.
The 1000 year interpretation by JWs is another and another is that they died spiritually on that day, by losing fellowship with God. The last is also good.
Come now! The snake was directly answering the proposition that they'd die the day they ate the fruit. And the snake spoke only the truth.The snake lied when he said that they would not die. Simple as that. The snake mentioned nothing about any particular day.
All of which is only incidental to the point, which is:
Is it not a good thing ─ an excellent and necessary thing ─ that Man knows the difference between good and evil? Is not Eve, even in legend, therefore a heroine of mankind?