Given the latest data, it is more accurate to say that within American Jews, "there’s a subgroup of Jews who do not indulge in self-hatred.". This seems to be in the minority. The vast majority of American Jews (around 75-80%) detest Netanyahu, and are rock solid in their support for the Palestinian people.
There is a very unfortunate gray area. Based on what I see (which is admittedly just my own experience with people I know), most American Jews do dislike Netanyahu intensely. Some smaller number of American Jews support an immediate ceasefire (but they’re blind to the fact that this is exactly what Hamas and Iran want).
However, I think describing American Jews as “rock solid in their support for the Palestinian people” is not correct. They’re actually rock solid in their support for Israel — but they’re egregiously wrong in what policies that actually implies. And the commonly-found left-wing bias leads them astray.
If you have a poll that shows otherwise, I’d be interested in seeing it.
In any event, the bottom line is that the Democrats are moving inexorably in a very bad direction. They’re already adopting a policy of allowing the survival of Hamas after the war (without actually saying so).
The Democrat mucky-mucks figure that a majority of Jews will vote Democrat in November almost no matter what, but the crazy “progressives” and the Muslims might sit the election out if they don’t get what they want. It pains me to say that I think their assessment is probably correct.