But how much of that is based on fear? Face it, if you go off the reservation, there are plenty of Islamists who will happily cut your head off. I feel that a great majority of the people who remain quiet do so for that very reason.
Here's what I suspect you're doing. You;'re taking a model of intimidation which has played out in other situations and applying it to Islam. This is like Liberals seeing how different sects of Christianity act, where people profess a faith and it informs their private spiritual life and then they apply this model to Islam, as though Islam was strictly a private affair to guide one's spiritual life.
Those models are both faulty.
Moderate Muslims believe in the VERY SAME things as extremist Muslims, it's only extremist who get off their duff and implement what they believe. Being a true blue Nazi believer but not actually taking to the street to round up Jews doesn't make a moderate Nazi an angel.
Can you support that claim?
Apostasy in Islam:
This traditional view of Sunni and Shia Islamic fiqhs, or schools of jurisprudence
each with their own interpretation of Sharia, varies as follows:[15][59][16]
Hanafi - recommends three days of imprisonment before execution, although the delay before killing the Muslim apostate is not mandatory. Apostates who are men must be killed, states the Hanafi Sunni fiqh, while women must be held in solitary confinement and beaten every three days till they recant and return to Islam.[3]
Maliki - allows up to ten days for recantation, after which the apostate must be killed. Both men and women apostates deserve death penalty according to the traditional view of Sunni Maliki fiqh.[59]
Shafi'i - waiting period of three days is required to allow the Muslim apostate to repent and return to Islam. After the wait, execution is the traditional recommended punishment for both men and women apostates.[59]
Hanbali - waiting period not necessary, but may be granted. Execution is traditional recommended punishment for both genders of Muslim apostates.[59]
Ja'fari - waiting period not necessary, but may be granted according to this Shia fiqh. Male apostate must be executed, states the Jafari fiqh, while a female apostate must be held in solitary confinement and beaten every day at the hours of the ṣalāh, till she repents and returns to Islam.[3]
We all see the various Christian sects which differ amongst themselves about what Christianity REALLY MEANS, well those same doctrinal differences also play out in Islam. As with Christianity and its core beliefs, Jesus is God, Islam also has it's core beliefs, death to apostates, dividing the world into two realms, the House of Peace and the House of War (lands under Islamic control and lands not under Islamic control, respectively), having a duty to convert the House of War into the House of Peace.