Actually, Japan had their own version of the ME 262 except it was even worse.
And I read an interview with Dr Werner Von Braun about american attacks on Peenumunde during the war as well as other information. The Germans were thought to be far down the path to a nuclear bomb, but they turned out to be on the wrong path. Given a few more years, they may have been able to change direction and do it right, but they didn't have a few more years.
This book is baloney. But it may be "interesting" baloney. Yes, the Germans were "close," but close is a relative word.
The writer postulates that the Germans were closer to the bomb than earlier believed, and I accept that.
Previously they were thought to be a thousand miles from the solution, now we can recognize they were 993 miles from the solution. Closer.