On the one hand, I agree that most ISIS and other suicide bombers are also mentally ill. A sane, happy person does not just go blow up or shoot a bunch of peopl

On the one hand, I agree that most ISIS and other suicide bombers are also mentally ill. A sane, happy person does not just go blow up or shoot a bunch of people. Still, there are differences. The particular terrorist here was described by people as having a clear developmental or psychological impairment. Autism and anxiety disorders are common among incels. While the mental illnesses common among suicide bombers are probably different on average.