Islam is merely the sympton, not the disease. The problem is violent, low IQ savages left behind as the world progresses. If Islam didn't exist, a belief system would have to be created that provides them with a (false) moral justification. Take away Islam, and you still have a problem with a culture/society, where, as the saying goes, "the only good thing they're good at is dying".
No Islam is the problem because in its belief it makes them into left behinds.