Well, it´s a manual, it isn´t designed to give clear unambigious instructions on what you want. It is designed to explain the programm´s functions, so you can find ways to do what you want to do. Your way is not everybody´s way…
I don´t need nor want to defend anything or anyone, but since you´re asking: The official statement is:
Support for Cubase LE products is given by the manufacturer of the hardware you got Cubase LE with - not by Steinberg. And as long as it improves the support for those who actually paid money for their Cubase I think, that´s ok. Other than that I don´t defend anything or anyone
Well, you could have done that. Nevertheless, you paid for your interface, not for Cubase.
And I personally think, Cubase is a well documented and proven product, but obviously opinions are different…