Also, as the article points out, it's really hard to write exciting books about achieving incredibly tight tolerances in manufacturing.

And engineers tend to be less colorfully interesting than physicists. (No offense intended, I'd include myself in this characterization)

Keep in mind that the Germans didn't have access to many resources. The allies had Africa, the Middle East and South America to supply them with all they needed.

Indeed, there could have been some other critical shortage barring the way. (IIRC the soviet bomb-makers mined half their uranium in germany, but something else maybe.) But aggregate industrial capacity wasn't obviously a show-stopper, if they were able to fund another very high-tech high-cost project.