Yeah, and respect for you for admitting it. For comparison, nazis also called Poles "pigs" with high consistence, but no one ever thought "pig" is antipolish slur since it's also one of those often used by everyone, including Poles for Germans.

Now when i think of it Polish slurs for Germans are pretty weak considering the circumstances, we have "szkop" (castrated ram, but also from the specific nazi helmet shape looking like pot or from Czech word for "highlander", literally "coming from up there"), "Helmut" (from the popular name), "Szwab" (from land of Swabia), even the worst case when we officially called the cockroach "Prusak" is also borrowed contextually from Czech language.