What I mean is that: they either use the Israeli New Shekel or Jordanian Dinar to process and conduct transactions due to them not having an official currency of their own that deems it Palestinian. Why don’t they have their own, since they are using someone else’s currency for daily purchases or transactions.
These days they don’t even get to have one intact building, and you’re wondering why they don’t have their own fiat currency? Consider the situation there the last 50 or so years and you’ll have your answer.
Spoiler alert: when you’re under constant threat of bombardment and can’t keep basic, life saving infrastructure running due to said bombardment, deciding on a national currency isn’t high on your priority list.