Exactly.
Not all non-nBC U.S. citizens born here would think to speak that way.
No nBc would think to speak that way unless corrupted while young by someone other than their mother or father.
But Vivek did think to speak that way.
And it’s good he did, because it shows why we enshrined the nBc category in our Constitution in the first place.
Vivek is an NBC, born to parents legally within the United States and therefore subject to its jurisdiction, which was the meaning of the phrase at the time it was written, and is a matter that has been adjudicated multiple times.
What has not been adjudicated is children born to parents not legally within the US and that is now likely going to be.