neither he nor his parents acting for him ever renounced his allegiance to the United States
The Ark court had no problem with accepting that someone who might be born a U.S. citizen can lose their citizenship because his parents renounced it for him. If we want to follow Ark for "guidance" on NBC, then we need to follow it here too, right??
There were a number of 20th Century SCOTUS decisions on revokation/ renunciation of citizenship, including Afroyim v. Rusk and several others.