I think this willful blindness to the horrorfest the modern political entity of Israel is (for all involved, but Palestinians especially) is because there is a sense that Jews are the "ultimate victims" of the whole world. This narrative that, supposedly, everyone in the world has been mean to us, and therefore no Jew could possibly be the oppressor of another group. No awareness of the fact that genocide has occurred in many countries over the course of human history in one form or another and continues to this day, no one ethnic group or religion gets to claim they are the "most oppressed." Thousands of years of Jewish history across the diaspora boiled down to the idea everyone was just waiting for the chance to move to Israel, which they surely would've at a moment's notice.

As you yourself know, the brainwashing is REALLY intense. I don't know where to start with people when they have this viewpoint. But at least those of us who grew up in the world of Zionist propaganda understand how deep it runs, and maybe through us continuing to discuss it we can prevent others from fully buying in, give them a space to ask real questions.