That would only be if they were born as Highborne. As I said, they are, at this point, no longer even considered cursed due to being biologically a new species. Thus, they really can't go back, as there never was a back to go to. They were born Naga, raised Naga, and thus would be Naga, especially if those who werew once Highborne have no desire to go back to what they were and thus reject their past in favor of their own future.