It’s so not antisemitism. It’s a chillel Hashem is what it is.
It was a group of 100 teenagers, among who, a number failed to follow the stewardesses instructions (which happened to be basic airline takeoff procedure).
Though the airline may have overreacted, I would never say they were wrong. I was a teenager not to long ago and have travelled with my classmates in large numbers. We were a little rowdy, though no where near over the top.
I could only imagine 100 teenage friends on such a flight. Not saying they were all wrong, but enough to worry the airline.