Obviously, toffeez
roulishollandais, I have no inclination to nitpick, let me just agree to disagree with most of your opinions expressed above, as a whole
If you have a personal problem with Mr Ziegler regarding how he expressed his views as a book author:
This opinion is fine by me, I have no intent to comment it; instead I respectfully suggest to contact Mr. Ziegler directly (or via the publisher).
This would avoid giving the impression that professional pilots may have taken for an absolute truth what is written in a popular book, even if the official technical manuals of the concerned aircraft clearly show them otherwise.