Except... PA and Hamas have the responsibility for health ie vaccinations in their land under the Oslo accords (first and second).
Palestinian authority and Hamas have gone with the Russian vaccine; Israel the others.
UN view is pointless.
Even if you disagree, that has nothing to do with the "joke", which refers specifically to "Jews". All people in Israel, irrespective of race, ethnicity, religion are being offered the vaccine. Certainly amongst certain demographics there has been low take up at certain age ranges but guess what? Same happens here.
EDIT: The comedian has form; previously found it funny to "joke" the "Miss Hitler" pageant winner was "Miss Israel".
EDIT2: The link you provided isn't a link from the UN, it's a separate group.