Islam's claimed divine origin HAS made a big difference for it's millions of adherents, though, because if they truly believe as they profess, then they are bound by their collective belief to accept its every hateful, twisted, venemous word without question, even as they accept its more tranquil ones.
The problem as I see it, especially with respect to Islam, is that it is merely religious in form, but at heart it is essentially a political, social movement aimed not at saving souls or reaching a personal ennobled state, but aimed instead at controlling conduct.
Specifically, it is aimed at controlling conduct through the hijacking of the power of the state.
When our Constitution was written, I think that such a malignant perversion of religion was far from the thoughts of the founding fathers. They would never have accepted that the "freedom of religion" they enshrined in the Constitution could protect subversion.
Islam as it is now constituted, harboring seditious political elements bent on nothing less than the overthrow of the American system of Constitutional government is not worthy of Constitutional protection.
The Constitution is after all, not a suicide pact.
Actually reminds me more of Mormonism