When the truth is boring, complicated, and disappointed, people look for other narratives. This is a classic example of that. The by-far most likely explanation is a series of small mistakes of the IDF (allowing "civilian" activity on the border, not reinstalling balloon-floating cameras, diverting attention to the West Bank, etc), together with excellent preparation by Hamas (Iranian help, only letting the lower ranks know the plan hours before the attack, etc).
But wouldn't it be so cool if there was this conspiracy that involved hundreds of people being ok with their own people dying, when none of these people ever showed a sign that they think that is morally justified? Let's work real hard to convince ourselves that is what happened, regardless of any evidence that we are too lazy to look into.
