Foreskin munchers hate Napoleon because the whole point of the French Revolution was to create a cascade of spreading revolutions that would destroy European monarchy in general, then some Corsican general in the revolutionary army went and made himself into a monarch, bringing the whole process to a screeching halt until they could try again with bolshevism. Sure, he was useful to them, but not as useful as setting the entire continent on fire with revolution would have been. And so, they will never forgive Napoleon for causing a delay in their tikkum olam.