This is mostly true of the NT, but not necessarily true of the OT. In any case, "inspired in the original autographs" is a giant loophole built-in to the Chicago Statement.
Amen. The Scriptures are never as simple as they appear, and the "plain reading" is rarely the best interpretation. I'm reminded of a quote of Augustine's in defense of his typological interpretations that saw Christ in all of Scripture:
"In every page of these Scriptures, while I pursue my search as a son of Adam in the sweat of my brow, Christ either openly or covertly meets and refreshes me. Where the discovery is laborious my ardor is increased, and the spoil obtained is eagerly devoured, and is hidden in my heart for my nourishment."
What "age of the earth issues" are you talking about? Seriously, if you go back and look at the early interpretations of Genesis 1-3, you will see that the church fathers were interacting with the best "science" and philosophy of their day in arriving at their understandings of Scripture. Aquinas did the same. So did the medieval scholastics. So did Calvin and Luther. So do we. The church's interpretations have always interacted with "secular" science and philosophy.
You have been sold a bill of goods. We are servants of the God of truth. As long as you and, frankly, the majority of Evangelicals continue to deny what is becoming more obvious and certain every day, our children will continue to desert the church in record numbers. The only way forward is to embrace and affirm the truth of both the word of God and the conclusions of scientists working in many different fields of endeavor. The probability that all of their conclusions are false is highly unlikely in the absence of a vast, worldwide conspiracy of scientists in almost every field -- geology, archaeology, paleontology, physics, chemistry, biology, medicine, computer science, etc.
Frankly, interpreting a piece of ancient literature -- let alone an extensive collection of diverse documents written by various authors over the course of at least a thousand years -- is far more complex and likely to err than interpreting the results of a scientific experiment. You really do have things backward here, because truths about the physical universe are far easier for us to discover and understand than truths about the living God.
Edit: Had to edit for clarity. The non sequitur had to go!