Ok, here's my amateur analysis.

Jenny McCarthy M.D. can't accept that she would have a child less beautiful, less perfect, than her. Therefore someone has to be blamed. The search for a scapegoat begins. Someone must have poisoned her. Or the child. Hmm. Click. Then she believes that she is the only one in her predicament, which more charitable people would never consider a predicament.

There's an old quote by someone (Cicero?) that to be ignorant of what happened before you were born is to remain a child.

And then there's the old celebrity takes up a cause thing.