Here are some fallacies I see in this review.
1 – To make this work, it must equate Christianity to physical birth and not conversions. Christianity is still well above Islam in conversions. AND Christian population is at 31% world wide and Islam is only 20%.
2 – While Islam is growing in some areas, it is found that 2nd generation Muslims that immigrate become less devout – not more – as they absorb into the culture.
3 – Also those who become apostate Muslims do not report because they are to be killed. They usually chose silence.
4 – Also in Muslim countries, religion is governed by civil law.
Any thoughts here?