This is not true, David.
The state of being dead spiritually, dead on our sin, is in Scripture. But you are applying this in a way that Scripture never does. Even
@Martin Marprelate pointed out that the "die, die" of Genesis is used elsewhere in Scripture and it refers to a certainty of physical death (the death of natural man). And so many passages (that have been provided) state that Adam was not created spiritually alive but alive in the "flesh", alive as "natural" man.
Your error here is not that your conclusions are wrong. I believe they are wrong. Your error here is that you have elevated your theories to be on par with Scriputre.
In Genesis we both agree with Scripture - God told Adam that on the day he ate of the fruit he would surely (or certainly) die. The text states that death would be certain. Later in Scripture (again, as
@Martin Marprelate points out) these words are used to describe a man dying physically. So we agree that death entered the world through sin, that on the day Adam ate of the fruit death would be a certainty.
Where we disagree is that you somehow read that passage to say that God told Adam on the day he ate of the fruit he would surely die, he would die physically a long time from then but he would spiritually die on the day that he ate of the fruit. You add so much to Scripture.