This is part of the negative characterization of Jews, and reflects some historical truth. While German Jews were wealthier than their Polish and Russian counte

This is part of the negative characterization of Jews, and reflects some historical truth. While German Jews were wealthier than their Polish and Russian counterparts, the majority did not fair better than their Gentile German neighbors. But the most important thing to understand for the Nazi version of jew-hate is the twinned concepts of the "Stab in the Back" Myth and "Volksgeimenschaft", the "People's Community". Many Germans believed (wrongly) that they were winning WW1, and should have continued to fight– that they were betrayed by their (allegedly socialist, allegedly anti-German) leaders in accepting the Treaty of Versailles. This is the Stab in the Back myth. This was blamed on the "others" in society the above poster mentioned. In particular, the Jews– in part for their perceived connection with Bolshevism and with international finance, as you mentioned. They were thus the "other" on which the very exclusionary German conception of a "People's Community" was based! So you're on to something, but as you suggested, the above poster is pretty right. Thanks for reading!