I havent read this biography but I have heard of Rashi before. Therefore, I am more than a little bit baffled at what comparisons could have been drawn from the fabulous literary work by Conrad. Rashi’s commentary may well be fondly called kurtz and sharf, but even Kurtz wasn’t kurtz. Can you give us an example?
Moreso, I find it extremely unlikely that a frum author could capture anything from it at all without copying the actual text word for word.