It’s always good to see the funny side. This was an actual fake profile. This person also targeted two others that I know at the same time with the same message. When confronted (and questioned about some of their facts and figures) they quickly deleted their comments and post.
This came a month after I was targeted on Linkedin as the face of bullying by one prominent influencer who called upon her minions to get me banned. This particular group operate as one large engagement pod (check this story on how that works https://medium.com/the-bad-influence/how-to-build-an-audience-on-linkedin-a-cynical-view-cf7cab31c206 )
I doubt it was anti-semitism. It was certainly aimed at discrediting me and others.