People with certain types of brain damage tending to be religious fundamentalists is not the same thing as religious fundamentalists having a certain type of brain damage. All canoes are boats but not all boats are canoes. There needs to be a prevalence study that yields the percentage of fundamentalists who have this type of brain damage vs. the general population before any generalization to religious fundamentalists in general is justified. People with autism are more likely to be atheists than the gen pop, that doesn't mean that atheism is caused by autism.
I'm not anti-Christian. I'm anti-stupid.