And Germany is now very much anti-Nazi. Russia as it currently exists is ruled by a man who incorporates certain aspects of Nazi ideology into his policy, especially as the Russo-Ukrainian war has turned toward a genocidal path. It's also an issue that Poland is placed in the perfect position for other powers to use it as a buffer against Russia, so they are very understandably concerned about being in the middle of two major power blocs- Despite being aligned with one of them. And also just a deep hatred toward Russia for all the time Poland spent as part of the USSR.