The slur was not the term Jewish, the slur was the fact that you equated being Jewish with being greedy. That kind of prejudice is childish, ignorant, and distasteful at the least. As for your claim of stereotypes being true, let me just say that the more racist someone is, the less able they are to recognize their own racism. They always use your exact excuse: "It's not racist because it's true." That just shows how deep seated your prejudice really is and how you expect it to be accepted by everyone else.