Good point.
Nevertheless, there is a great deal of emotional content to this within Polish culture. I'm not even Polish-born, (I consider myself to be an unhyphenated American), but a hatred of the Teutonic Knights is so strong in Polish culture that it passed on to me too.
Maybe the fact that I read Sienkiewicz's Teutonic Knights as a teenager has something to do with it...
Just read Amazons summary of that book. Seems to be written from a very polish perspective. The knights built some quite impressive buildings over the clay huts they found there - hope that’s mentioned in the book.
Have you read Sienkiewicz's other books "With Fire and Sword", "Fire in the Stoeppe" and "The Deluge"?