This might be very idiosyncratic to how you engage with people or with whom. I've lived in the deep Midwest and in an east coast major city. My name is EXTREMELY jewish. I have literally never had to explain my position on Israel or zionism when introducing myself. If Israel comes up in conversation in one way or another? Sure, people have asked what my opinion is, as a Jewish person, on Israel or such and such events, but that's pretty reasonable and I don't think ever frontloaded with anything.