According to reports published on 17 November, the police concluded based on interrogations and their investigations that Hamas did not know about the festival beforehand

It was between Hamas and the military objective. Israeli helicopters fired indiscriminately on the festival-goers so there's no high-ground here.

But yeah if you attend a music festival outside a concentration camp, you deserve what you get. In a just world, Zone Of Interest ends with the happy families outside the camp getting massacred by its inhabitants.