As I said, according to TE, the question is purely academic.
Sin is something that affects us in the here and now. On the Day of Judgment, we won’t be able to turn to Adam and Eve and say, “It was their fault.” We will have to give account before God for ourselves.
The reason some people get so upset at the suggestion that Adam and Eve might have been theological rather than literal and historical is that they want someone to pass the buck to. In fact, the whole story about Adam and Eve is a cautionary tale against passing the buck in that way.
- Us: “It was original sin.” Blame Adam and Eve.
- Adam: “It was that wife that you gave me.” Blame the wife, and blame God.
- Eve: “It was the serpent.” Blame the demon. “I need deliverance ministry.”
- And the serpent didn’t have a leg to stand on…