Until I moved to Broward county I thought the same as you. Most American Jews support Biden no matter what.
I am Jewish and obviously have a Jewish family.
You have no idea how insular the group is, news wise. They talk and think stuff that is simply untrue, factually. Literally never hear most significant news.
And there is massive cognitive dissonance when I point things out.
It’s like the old saying: it’s far harder to convince someone they have been conned than to con them in the first place.
Blacks and Hispanics tend to have the same bubble.