You are exactly right.
More on the effects of inbreeding. Danish psychologist Nicolai Sennels:
"Research suggests that many suicide bombers are suffering from depression, and their actions are just a socially accepted (among Muslims) way of committing suicide . . . close to ninety percent [of the suicide bombers were] suffering from severe illness such as blindness, cancer, missing limbs or leprosy. Many Muslim societies, including that of Afghanistan, have a low social acceptance of handicaps and severe illnesses . . . being physically handicapped or mentally retarded often leads to exclusion in a society like Afghanistan, and becoming a martyr might be the only chance of achieving social recognition and honour if not just a way to end the pain of being socially isolated (which is especially traumatizing in collectivist cultures like Islam).
"Al Qaidas use of people with Downs syndrome might be another unpleasant side effect of the many chromosomal illnesses resulting from inbreeding between first cousins. People with low intelligence (because of inbreeding) might also be easier to brainwash with fundamentalist Islam. . . . Being an outcast due to a physical handicap, living in a country that does not manage to take care of handicapped people, suffering from physical pain following disease, or being depressed or schizophrenic, has now proved to be an important factor as well.The unhealthy culture of inbreeding in Muslim societies increases the number of Muslim martyrs who are looking for an honourable and socially and religiously accepted way out of here."
My emphasis.
Oh boy. That culture needs basic teaching in human compassion.