As someone who knew only East European Jewishness for years (klezmer, knishses, kishka, blintzes, etc.), I agree with your evaluation of what is Jewishness today. Here is a good anecdote: The New York bubba is visiting her grandson, whose parents had immigrated to Tel Aviv. On the bus, she speaks to him in Yiddish. Another passenger comments: "This is Israel. Our language is Hebrew! Why are you teaching him Yiddish?" Bubba replies staunchly: "Because I do not want my grandson to ever forget that he is a Jew!"
- 6:49 PM
from the article: Court orders state to alter West Bank separation fence route at Bil'in