We saw Hunter a lot this past summer. His dad is a nice guy, but we didn't see anything promotional at all coming from him. There's no reason or need for him to promote his son. Everyone else is doing it, though.
Those that have been involved here on the HSBBW for a long time can probably remember topics about all the hype given to Bryce Harper and before that Justin Upton. It always amazed me how many had kids that played with or against them and claimed they were over hyped.
Maybe a search for Bryce Harper or Justin Upton would uncover some of those old posts.