http://www.nytimes.com/2014/11/17/u...an-scorned-by-australias-news-media.html?_r=0
The above link is a pretty good summary of the Dingo case. What strikes me as a pretty big difference here is the stance that SB has taken. He has not egged on rumors. He is very careful about LE influence on public speculation. Additionally I think evaluation of forensic physical evidence has advanced so incredibly far in the past 32 years. Not to say that is it infallible or that human error is not possible, but there were some real blunders in that case. Also, we don't know what IR and GGP think. They might think it's possible something happened with the parents. They might think aliens came out of the lake & launched Deorr to the moon. They might, as IR said, only be aware that the kid seemed to disappear. And finally, the investigators in this case have stated clearly that there is no evidence whatsoever to support the idea of wild animal involvement. Azarias stained jumper was found within days of the disappearance. There is nothing, no trace, to indicate that little boy was removed from that campsite by an animal.
The speculation on JM and her personality does strike me as similar. I was really put off by watching Lindy Chamberlin describe how dingos peel their victims like an orange while simultaneously talking about how her infant child died. That is disturbing. Maybe she is a weirdo. Maybe she and JM and anyone who isn't always publicly totally enraptured by the glory of their own offspring 24/7 is a weirdo. Of course, you can't take it too far the other way either or you are definitely too obsessed with the kids & also a weirdo.
The point is that those are all little pieces to the puzzle that create the whole picture. This is just the way the human mind puts information together to create and idea. If there is more than one unexpected bit of info they get put together in a category. Missing kid+ chilling/weird statement/behavior from parent+ improbable explanation about what happened to the kid= a second look. Local investigators, County investigators, State level investigators and National level investigators are all highly trained, experienced and have concluded after several reviews that there is a criminal portion to this missing child case and the parents are the criminals.