ISIS is naked Islam. Every other kind of Muslim is practicing taqqiya. That’s the problem the Islamic world is having with ISIS - they can’t fault their philosophy, because they share it. The only thing they can fault is the tactics. ISIS believes it is pure because it is not hiding anything. It stands for the abandonment of taqqiya. And because of this openness, it is declaring itself as the foundation of Islam and thus the rightful Caliphate.
The rest of the Islamic world considers them crude and ignorant about the realities of taking on the West through cultural infiltration and political sabotage, and are pissed that they are so brazenly confirming the world’s worst fears about what Islam is really all about.
Nevertheless, the cat’s out of the bag. Either the Islamic world stops ISIS itself and rejects their “teachings,” or ISIS will eventually give the world the final justification it needs to wipe Muslims off of the face of the Earth.
And if ISIS is actually a Western psyop, Islam is in a lot of trouble.
Islam cannot even agree with itself, however. There are Sunni and Shiite and they can get pretty ugly when they have their religious wars.