This may be your preference but with the passage if the nation state law in 2018, this is no longer the reality.
A big change under this law is: “the right to exercise national self-determination” in Israel is “unique to the Jewish people.” --- Christian Israelis, Christian Arab Israelis, Muslim Arab Israelis, atheist/secular Israelis, and Druze are now a separate, lower class of citizen,
And ethnicity has nothing to do with this change. First class status in Israel is based upon one's religion and one religion, only: Judaism. Politically, tradition has prevented non-Jewish political parties from joining to form a government; this new law codifies that tradition. Now, by law, only Jewish Israelis have the right to determine what kind of state and society they live under
Benjamin Netanyahu called the passage of this law "a defining moment in the history of the state". He is right about this.
So I'd embrace Israel being a full-throated theocratic state now. The only other available option on the global stage is apartheid state.
My point was (and is) - that to exercise that right, they do not have to be practicing Judaism, they don't have to even believe in God.
To be part of the "Jewish people" is not a religion - it's an ethnicity.