So what do the Poles owe the Jews?
Exactly what Jews owe Poles: the duty to tell the truth about (their greatly shared) history. Sadly some people here wish to lie about that shared history and to paint 'the other side' as being to blame for everything.
If this excerpt from the book isn't true do you really think that Yad Vashem would have it on its site?
What Yad Vashem have on their site is what a certain professor claims to be the truth ("Thoughts of Professor Tomasz Strzembosz"). They also have a statement on their site which presents the opposite views to Professor Tomasz Strzembosz. We can find it here:yadvashem.org/odot_pdf/Microsoft%20Word%20-%204797.pd f
I wonder why you did not link to that document? Could it be because the document makes the point that
Professor Strzembosz explains his ignorance by the fact that he does not "speciali[ze] in Polish-Jewish relations."
Show me the evidence.
You are claiming that Gross said something: it is for you to prove that he said that.
I note that you have carefully avoided making any attempt to address the question of why prof. Gross decided to write a section in English in a book that was written in Polish. Pity for you that we all know the answer to that point.