I'm not sure how admitting that some leading bankers are Jewish and painting them as such is "anti-Semitic. I don't read that as "fudgy". The alternative would be never to paint the truth if someone might object and I seem to remember people dying at Charlie Hebdo for the right to offend and us applauding them for doing it.
There is a law against inciting hatred against a person on the grounds of their religion. This was brought in by the Labour Party so I would say well done to them on that. All people of religion may use it equally and it is a good law.
On the other hand anti-Semitism means hostility to, prejudice, or discrimination against Jews. Discrimination isn't good and in some circumstances my be illegal. The word anti-Semitism however, being used to attack others generally, in the press and on here. I can see no good coming from this. If you misuse the protection that you have been given because of the past, and cry wolf at the drop of a hat just in order to attack people you disagree with it will, in the end, rebound. And that worries me.