You are right. This was some kind of ambiguous.
Of course I googled and found these pages. But I had the feeling, that these people belong to the "ingroup" and I am an amateur. I wanted to have an opinion of "normal" amateurs to understand what it is really possible or not.
And the reaction in a German and this forum was null. So I thought: If the book of ZS5JF is sold so often where are those readers?
But as you have noticed I read the book a second time and found it inspiring.
72 de Hajo