I am fully aware, but that doesn’t apply here. Marx never considered himself Jewish, nor was educated Jewish, so I think blaming Jews for him is gauche.
*You are wrong about one thing. It wasn’t European societies who determined that, it is Jewish law.
I don't think "blame" is the correct term to apply. It has become apparent to me over the years that being Jewish often imparts high intelligence. Ashkenazi descended people are some of the most brilliant that the world has ever known.
The problem with Brilliance, especially as applies to comprehending social phenomena, appear to me to be two fold.
1. Sometimes there is a thin line between "Brilliant" and "Crazy".
2. Sometimes "Brilliant" people are not so smart as they think they are.
I think Karl Marx was a little of both. As a matter of fact, I see these two characteristics repeated over and over with a lot of our modern day "social engineers".
They are in over their head and don't realize it, and they dart back and forth over the line between reality and insanity.