Neither the date nor the religion/culture of the scholar is in any way relevant to the arguments he puts forward (I take it you were being serious and not taking the piss out of those who have used such get-outs in the past?).
It is a general analysis of how all three religions have been adapted to suit various agendas throughout history - in my opinion a brilliant summing up of the 'movable feast' nature of all religions.
Nit-picking the teachings of Islam to point the finger at all Muslims as being potential perverts or killers or general undesirables is an all-too-common practice on this forum and using the brutal killing of a young man within days of the event in order to do so seems particularly despicable - and speaking as a non-believer, particularly 'unchristian' - correct me if I'm wrong.
A plague on all their houses      
Jim Carroll