Just like being anti-Trump doesn't mean you're anti-American, being pro-Israel doesn't mean being pro-Netanyahu (or pro whatever the government is at any specific time). I would guess that considering yourself a Zionist does actually correlate like 0.95+ with being pro-Israel, but "pro-Israel" doesn't correlate very well with specific Israeli government regimes or policies, and that many people are both pro-Israel and pro-Palestine at the same time (e.g. most two-state-solution supporting Jews). For example, Yesh Atid voters in Israel are very pro-Israel, but very anti-the-Netanyahu-government (they are the largest opposition party), and Yesh Atid explicitly supports the establishment of an independent Palestinian state.