"Non-member state" is in fact a state.
First the Israeli govt invited terrorists into Israel to serve as a de facto "national leadership" of this arab non-people.
The Israeli govt embraced the lie of the Arab Fakestinians' invented history.
Then the Israeli govt armed and funded the PLO as this new national leadership.
Then the Israeli govt gradually ceded various levels of sovereignty and self-rule to this group in certain areas and increased the degree of that sovereignty and self-rule over time including IDF withdrawals from certain areas and Jewish citizen expulsions from certain places. They "earmarked" various portions of the Land of Israel to be designated as belonging to the arabs in their future state.
Now the UN has indeed declared that this group possesses a "state" of some kind (although parameters are left unknown or unstated). The UN has indeed stabbed the Jewish people yet again.
And with or without the meaningless UN vote by a bunch of third world lunatics and racist dictators, the Israeli govt has already given the Arabs a de facto statehood and already committed themselves to the longterm "2-state vision" for decades now.
So really, how can the Israeli govt complain, and why should WE care at all about this? This UN declaration only points to the absurdity and evil betrayal of Israeli policy! Enough is enough.