Orban is against the recognition of Palestine even though Hungary technically officially recognises it and hasn’t withdrawn that recognition, and he’s also one of the loudest voices amongst Islamophobic and right-wing EU political leaders. Presumably Netanyahu figures that an ally like that within a bloc as big as the EU, which also has some more pro-Palestine voices who could potentially sway others, is worth the cost of Russia being in a better position. After all, while it is an ally of Iran, Russia’s attention is largely being kept elsewhere for now