Jews see Islam & Christianity as imposter religions, resentful of Gentiles practicing monotheism & worshipping God. They believe God isn’t for Gentiles, believing their duty is to serve Jews instead. A Muslim or Christian practicing their faith contradicts a Jews preconcieved hierarchy. It trashes their self-perception of ‘Choseness’. This is what REALLY upsets them. Proof to the extent is typified in Uzi Dayan’s bizarre exclamation.