Your argument is an example of the “No True Scotsman” fallacy.
Court decisions get overturned all the time. That’s why courts of appeal exist.
Going even deeper, the law is ultimately political. Historically, there’s an ever-repeating cycle where the law gets so out of synch with the people that the people decide they need to hit the reset button, which can be as gentle as changing how they vote, or as harsh as bringing out the Guillotines.
The current disagreement over the definition of NBC is becoming just as much of a political argument regarding what the law should be as opposed to merely a legal argument over what the legal profession claims it is.
Lawyers can be and have been overruled by the people many times in the past.
The two ways the people hit the reset button is by electing the leaders you want and working with them to change the law. The only way to change anything is by putting energy into beating Obama at the ballot box and getting the legislature to pass an amendment to define “natural born citizen” as someone born here to two citizen parents, not they way it’s defined by the law as it stands. These court cases are getting nowhere.
And this is a point which needs to be shouted from the Mountaintops! The courts WILL do what the people demand when the people get sick of their bullsh*t. I think it's way past time we put the fear of God and the People into some of these presumptuous bastards. The courts need to be reminded that they answer to US!