It is certainly one of the most overlooked. If true, even more overlooked would be the problem of the Muslim population crash in particular. I have not read Goldman's book, but a friend has told me that he overstates the case for a Muslim population crash, though. Do you think he does?
No, I think he is spot on. How can you overstate raw fertility rate data? He backs up his case exceedingly well.
By the way, Goldman is a FReeper.