The author did read his FSN, though he couldn't reach that level. If you compare the dialogue here to the one between Shirou and Archer, you see there are some things wrong in this work. That will to save everyone worked with Shirou because he's deranged (damaged) and knows nothing, but Suimei is supposed to be a collected, profound, and educated magician. Furthermore, in Shirou's case the fact he was basically arguing with himself was very important because when you really believe in something to the point it's your faith and raison d'être, some flimsy words from other people are meaningless. However, if you are facing yourself, just who are you trying to convince? There's no escaping the truth of it all. It's the ultimate trial.
I was thinking the same thing back when reading the novel: The author has some basic ideas, but he simply doesn't have what it takes to make them work. Dialogue may start well, but it will soon be reduced to repeating the same lines in different forms, like children or drunkards shouting at each other, with no intelligent development, no solid arguments and counter-arguments.