Jewish nationality excludes being Polish, you're either a Pole or a Jew
Fortunately the laws of Poland disagree with you.
There is some logic to this... The Poles granted citizenship to the jews, who, according to my research, were invited to live in Poland when they were expunged from western Europe. (18th century?). So, jews became Poles.. however perhaps it is worthwhile noting that though Jews may be Poles via immigration, Jews do not consider Poles to be Jews, eg; Poles are not granted jewish citizenship in Israel.
So Jews are Poles, but Poles are not Jews. A bit of a discrepancy there. They are us but we are not them.
Which is a rather illogical equation that only adds up in Poland.
I guess, since it seems to be the jews holding onto their jewish identity and not the Poles enforcing that identity upon them, we could say that Jews are different from Poles because apples are different oranges. Even though both are fruit and grow in groves.
I am also sure there were probably a good number of jews who made a successful transition from jew to Pole and mixed into the general population. And no doubt, if you do genetic testing you will find jewish blood among the Poles, and polish blood within the Israeli population. I know this is true in my family for instance, because I have sister with genetic defect which is commonly known as a jewish disease in medicine, yet, my family are not jews. Most likely, many jews converted to Catholicism in Poland as well. There is absolutely no way, jewish or Polish marriage customs aside, that these two people lived side by side so many hundreds of years and kept their bloodlines entirely distinct from the other.
Which can also be said of any nation where jews resided. there is a lot of inter-marriage between people of semetic decent and people of european decent in the US as well. The only ones enforcing the idea of separatism are those who hang onto the idea that jews are a distinct race of people.. as in Israel. The Palestinians are another example.. though Israel denies them Israeli ctizenship, they are essentially the same people as the jews, they are the actually same race in that context, among them many people who simply left the 'tribe' many years ago.
Which in reality leaves us only in the position of saying.. you are a jew if you decide to call yourself a jew. A Pole if you decide to call yourself a Pole.. A Russian, a German etc. because all of these nations had large intermingling jewish and germanic/slavic populations.
But none of this allows us to escape the fact that certain of the jewish population follow what is known as the Oral law, the Talmud and it's counterparts, making a wide distinction between themselves and the 'goyim', the non-jewish people of the nations. It is widely agreed that some of Luther's writings did in fact even inspire Adolf Hitler. Those writings, are ravings from Luther concerning the Talmud. Luther was German and thus also, it's not hard to imagine that the German's would give serious thought to his writings.
On the Jews and Their Lies, 1543
by Martin Luther (1483-1546)humanitas-international.org/showcase/chronography/documents/luther-jews.htm
I would say, yes, this writing probably led to much anti-semitism amnog the Germans.
However, rarely is the Talmud (or Cabala) examined for it's racism, of which Luther wrote. And quite possibly, Hitler convinced himself that Jews were Poles and Poles were Jews also, even though Israel does not accept that as a basis for allowing Poles to claim Israeli citizenship.