Honestly I think it may be the case; I've seen zionist Jews chiding anti-zionist Jews calling them fake Jewish people; Ben Shapiro has certainly made the claim that if you're not a zionist you're not Jewish.

You're right that a lot of them are bad faith, but I honestly think more Israelis and people overly-close to Israel (i.e. have the sort of fried brains where they think Qatar is a state sponsor of Islamist terror directed at Israel) do sincerely believe that, because they believe in an equivalent of the Great Replacement. They earnestly believe that Jews need to be kept a majority in Israel because an Arab majority -- where those Arabs also have civil rights -- means that the Holocaust 3 begins (2 being October 7)