Well, you're wrong.
It was defined then, the same definition a hundred years later, taught in schools in the 60s, defined in US citizenship materials.
Nobody has changed it.
The framers didn't define baby Jesus either, but I'm sure you know what that means.
I want you to believe what you wish. I would have no objection to your believing that Castro is Cruz's real father. It really doesn't matter to me what you conclude. I just ask that you consider each candidate's constitutional eligibility no matter what standard you conclude is correct. That's what I do. I don't insist that you come to the same conclusion that I come to, I just ask that you use whatever conclusion you believe to be correct.
It's hard for me to understand what you find disturbing about that. Voting is important.