Yes it is a disputed issue, the muslim guy in our office doesn't give about things like apostay and if prefectly happy to respect the law of the land he lives in. All you are doing is presenting the most etreme sect of Islam and stating it as a fact that all muslims are aherents to it.
It's a pretty transpartent arguement you are making.
It ought to be pretty transparent, and it isn't just some extreme sect. Muslim guy in my office drinks alcohol... not really relevant - Islam calls for Muslims to not drink alcohol.
Islam calls for people to be killed for insulting the prophet (granted after a trial - but it is still the punishment under Islamic law and that isn't widely disputed)