Have thought about this, but I think it's actually pretty straightforward: speaking from experience, most American Jews live 90% of our lives as white people. https://twitter.com/jacremes/status/1194638395789783040

More specifically:
-Non-Haredi, Ashkenazi Jews feel white enough that we don't feel a need for a co-ethnic in the White House to protect our community's interests
-It's disturbingly easy for a conservative, affluent Ashkenazi Jew like Miller to bet his political ID on whiteness

Anyway, YES this is changing with a resurgence in right-wing antisemitic violence, but if you expect your average American Jew—Ashkenazi, living in a city, and yes, higher income than average—to just throw away the material and social privileges of whiteness over that? Nah.

I don't think its coincidental that the reemerging Jewish Left is coming from downwardly mobile millennials: there's a proletarianization of material conditions that's driving cultural/ethnic/racial re-identification with something between whiteness and not.

Politically, economically, and socially, most of American Jewry looks a heck of a lot like Episcopalians

Anyway, @TheHipsterRebbe also breaks it down really well here https://twitter.com/thehipsterrebbe/status/1194442793994903552?s=21