It's funny, because it's true. You can be Jewish based on ethnicity and religiosity, e.g. you can convert to Judaism and claim to be a Jew, but you can also have Jewish heritage (that runs through the mother's side of the family) and claim to be a non-practicing ethnic Jew. Both are technically true.
He was going for the Jewish demographic and played their silly games.
It's funny, because it's true. You can be Jewish based on ethnicity and religiosity, e.g. you can convert to Judaism and claim to be a Jew, but you can also have Jewish heritage (that runs through the mother's side of the family) and claim to be a non-practicing ethnic Jew. Both are technically true.
He was going for the Jewish demographic and played their silly games.