Maybe Israel wants to control the narrative and Gaza's journalists are getting in the way.

Maybe they want revenge on Palestinians for daring to risist. Same reason they bomb hospitals and kitchens and schools. Same reason the mow down crowds of aid seekers. Same reason they target children for daring to be born. Same reason they torture doctors. They're trying to break the will of the people and punish them for daring to resist, and make themselves feel powerful and godlike even though they still can't actually win.

Or maybe the cruelty is the point, they're so poisoned by their own propaganda that they just delight in genocide for its own sake. Winning isn't the point anymore and it's just about inflicting suffering and terror and death.