It’s an uncomfortable but inescapable fact that some Muslims are not capable of functioning in society. They derail not because of Islam but because their psychic disorders find an ostensibly religious outlet. https://metro.co.uk/2020/10/29/one-dead-and-several-injured-in-knife-attack-in-nice-13498464/

Such people tend to find ostensibly religious outlets for their psychic disorders because of the pervasiveness of Islamism, which is a theological deviation that re-imagines Islam as a modern political ideology with resentment at its core, and is modeled on Marxism.

Ideologies like Islamism, Marxism, anarchism, fascism, sovereign citizens etc all have resentment at their core & thus can all function as outlets for disordered people, often narcissists, obsessed with their supposed unfair treatment by the world & their failed expectations.