I think it’s a load of crock. That man is not an adult CS child just based on the casting calls. The character description matches Henry, who has the heart of the truest believer and is already a developed character. He’s clearly Henry as an adult. Just look at him next to a picture of Jared Gilmore. Even if the girl were the adopted daughter of CS, would the CSers really want that? She comes from a broken home (i.e. divorce); some people just have no sense and are desperate to have their fave couple procreate that they’ll say any new character could be a potential CS baby (even when she is clearly Latina and not their biological child).
It’s never enough for them that Emma already has a son because Henry is also Neal’s son and not the beloved pirate’s son. No matter what, Henry will never think of the pirate as his father — he said as much in 6×6 and rejected him as his father figure. Henry doesn’t even need another father figure anyway because he has Grandpa Charming, who is a much better male influence than Hook.
Also, Henry being the star of the next season just makes a lot of sense. He’s central to the story as the author. He has the heart of the truest believer. We know that he was born of true love, the way Emma was. And that is what is really the source of the problem for CS fans. Henry was born of true love. He is a hero and the son of the savior. He is special the way Emma is special. He’s potentially a savior too.
"That’s how you know you’ve really got a home. When you leave it, there’s this feeling that you can’t shake. You just miss it." Neal Cassidy