It's not accurate to say that his views are not represented by mainstream Israeli citizens. Most Israelis think the attack on Gaza has either been justified or not gone far enough! Israeli leadership very much represents the views of the majority in Israel (and Zionists outside of Israel).
When he says "Surveys today show a majority of Israelis wanting a ceasefire-for-hostages deal" he is right. But Netanyahu isn't likely to allow it to happen unless forced by an outside party.
When one is close to a hostage deal Netanyahu does something to torpedo it, like this recent statement of his:
https://www.pewresearch.org/global/2024/05/30/israeli-views-...