Sheep are always going to find a shepherd. If it wasn't Jenny McCarthy, it would have been the crackpot next door who believes ninjas are watching him sleep, your friendly local cult leader, or the stay-at-home mom who does nothing but read the interwebs. Her appearance might have quickened the movement, but it was there already and most of those people would have found that ideology anyway.
Yes, Jenny McCarthy is an idiot when it comes to this but I'm actually going to cut her a little slack. While she went about it the wrong way, I admire her for at least trying. I used to work with special-needs children and you just cannot comprehend what those parents go through everyday, every moment. It would make any normal person insane. And quite honestly, the parents that are insane usually have the children that do things that many have told them would be impossible, from potty training to multiplication. I don't agree with her statements, and I agree that she's irresponsible, but I totally empathize with her and not just wanting, but needing to know why this horrible thing happened to her son.