How could it possibly have taken over a month for this news to come out? That is, could any of the festival attendees or anyone who debriefed them have thought these might have been Hamas attack helicopters? Of course not. So we're left with two options as to how to understand this "revelation".

One is that no such attack took place at all, particularly one in which Hamas devoted "thousands of terrorists" just to shoot dumb millennials rolling on molly out in the desert. But the Israelis are so desperate for us to believe this attack took place that a month later they calculate that they can take the bad press of "things getting a little out of control".

The other, far less likely in my opinion, is that some nominal attack took place. It would be just enough to create chaos and stampede the herd, and all the dumbshits could tell the story of "how they barely survived". But the IDF needed a high body count so they used these helicopters. If that were the case, though, we would have already heard all about the heroic pilots swooping in to save the day, only to later learn their marksmanship was not ideal.

So no, I would say none of this ever took place, but is rather a sign that people aren't buying their bullshit narrative and they know it.