This illustrates perfectly the trap that I have seen in Islam. If you look at it from a pure “tactical” standpoint it really seems to be created for the benefit of coerced growth. You have every freedom to join the religion but no right to leave it. Well, some might argue that you do – if you want to face death.
This is one that Muslims in the West have a hard time explaining. It is a real twist on the “once saved, always saved” adage I used to constantly hear from the Baptists. It is more like being in the mafia and trying to leave.