The term is used by both sides to hide their own scumbaggery.
You'll see some on twitter and previously on here say it is used to collectively dismiss all anti israel opinion. They'll even post a meme of a ultra orthodox jew being anti israel, wow
Then you've got defenders of israel claiming all criticism is anti semitism. Often taken and run with by the media.
It is used by both not for the genuine reasons the term exists.
Jews have been mocked in movies and entertainment far more than any other religion. So this idea that no one can comment on on judaism is lying.