Naive is not stupid.
The constitution is more complex than rocket science.
The point is that, outside of those with divine knowledge, what the document means has to come from the humans reading it. You, me, or the man on the street has to tell us.
As I said before the Founders’ disagreed profoundly as to what parts of it means so there is nothing unusual in disagreement.
If there is no agreement among the writers or Founders why does it shock you that there are still disagreements?
Because I doubt that any of the founders believed that what it meant was exactly the opposite of what was written.