Their citizenship isn’t validated by the process, only documented. Without the forms m the individual is still a natural born US citizen. But it is easier (but hardly impossible) to prove citizenship.
Frankly, his birth certificate and his mother’s are sufficient. Asking for more shows signs of extreme bias. Especially the request for his passport, which is nowhere near to being a public document. Frankly, that request is creepy, given the context.
No, the state department says that the process is to have a CRBA or a newborn passport to register a child born overseas. They aren’t my rules. They are your government’s rules.