@Bratwurst Boy
Depends, Germany pre-ww2 wouldn't have hesitated to fight more for it's eastern lands if it wasn't for communist uprisings and internal problems. Despite Poland facing the red army in the east.
Modern Germany is different I grant you that, but with how the state of affairs are in Germany. It's internal disputes (again) has to be handled before going with any full force internationally.
More then not Germany sees Poland as an obstacle, lesser power to be exploited as much as possible and not allow to grow stronger/more influential then Germany.
Which is why Germany has a national interest to have good relations with any state east of Poland that has similar goals or issues. Wether it's Ukraine or Russia is irrelevant to Germany as long as it's able to climb the hierarchy in Europe and a threat from the east is lessened.
Germany has no need to be humane or semantic about excistance of Poland as it's a united nation of Slavic tribes that got together to stop/slow down Germanic expansion eastward. As long as Germany expands (especially eastward) Poland has to be wary.