“People with low intelligence (because of inbreeding) might also be easier to brainwash with fundamentalist Islam.”
And anyone who has looked into the issue of Islam/Middle Eastern consanguinity knows they’re definitely LONG on people with low intelligence. Generations of cousins marrying cousins is NOT good for the gene pool.
Global prevalence of consanguinity
Coincidence? I don't think so.
(Sources of the images are in the links.)