Anyone who has observed the prowess of a young Asperger video gamer would realize what a fool he'd be to bet against a kid like that's predictive ability. But that's not all. The hypothesis of this study does not hold up any better in my "real world" experience.
The thing is, as aliens, they had absolutely no concept of religion. And the only thing they could conceive for Vegetarianism was the general concept of disability. The idea of a life choice was too strange to consider.
Having said that, I concede that there may be differences in how I predict things as compared to how neurotypicals predict. But this study does not answer that possibility, nor does it present any new evidence for what a difference might be and how it might happen. The autistic narratives the researchers cite don't distinguish input problems from processing problems in most cases. In any case, their interpretation takes those writings quite far from the context in which they were intended.