This is part of a narrative that this wahhabi sect Sunni was mentally unstable. This wahhabi sect sunni was a wahhabi sect sunni in the faith which says kill all non believers. This other stuff is crap.
It’s certainly possible for a soul to be both evil and mad.
Salafists are the sect of Wahhabism which contains the problem child faction. One faction abhors all politics but the other faction is very aggressive.