"His work recalls that of German Biblical scholars of the 19th century, who changed Christians' understanding of their scriptures by uncovering their multi-layered history."
I hope it doesn't. The 19th century Higher Criticism movement among German scholars was as intellectually bogus as they come. It's been exposed; there are no "multiple layers".
(There are...)
The absolute prohibition of criticism by Islam has deprived it of any vibrancy.
But of course there is a good reason Islam prohibits criticism. The Prophet must have known Islam could not withstand careful examination.
"Here is the truth...but it must never be examined in the light of day...it must be spread by the sword...and once accepted, a person can leave it only under penalty of death."
Yeah, Mohammed had much confidence in the natural durability of his truth. What kind of truth is it that is afraid of the light of day?