In their analysis, the researchers found no significant differences in conspiracy mentality between the autistic group and the general population. Both groups scored similarly, indicating that being autistic does not inherently affect one’s general susceptibility to conspiracy beliefs.
This finding suggests that conspiracy mentality is not linked with autism, contradicting two potential hypotheses the researchers explored: one that autism might increase susceptibility to conspiracy beliefs due to common experiences of social exclusion, and another that autism might offer a type of protection against these beliefs due to cognitive characteristics associated with autism, such as analytical thinking.
Link to the study:
https://www.tandfonline.com/doi/full/10.1080/13546805.2024.2399505#abstract
Isolated (mis)information streams and the need to identify with an ingroup are the two biggest features to me.