Come on spore, how many times does the family and the police have to tell us that they are not telling us all that they know. Yes, they are hiding things and they keep telling us they are. It's not like they have ever once said that they are being honest or telling us the whole truth and nothing but the truth.
The only real issue is if the family is lying to the police or hiding info from the police. They can lie to the media and us all they want. They can hide info from the media all they want. The difference with Smith and possibly Ramseys is that they were lying to the police also. Plus, the police didn't ask them to lie or hide info like they asked the Smarts.
What information have the police asked the Smarts to hide or lie about?