Old habits die hard, don't they? I tend to see it in terms of the boiling lobster analogy. As the democratic party has shifted away from liberalism and towards racist identity politics, the shift has been gradual enough so that there was no one big jolt to really drive home the fact that it is now the left that is highly antisemitic rather than the right. I read Jewish voices on antisemitism all the time that STILL look only to the old fashioned neo Nazi type antisemitism while ignoring the leftist Islamist inspired variety. Heck, in Britain it has become so bad that as photos have surfaced showing Jeremy Corbyn celebrating the mass murder of Jewish athletes at Munich, people STILL deny any antisemitism. In the pecking order of leftist identity politics, there is only one identity that is actually less hip than "white male" and that is "Jew". It's about time more Jewish people started to realize that.