Don't forget war is also politics. Bibi fled Israel before Israel's attack, and the entire existence of Bibi's position currently depends on endless war. Bibi also wants to draw other superpowers like the US, France, Germany and the UK into the war. Any news that Israel is actually losing the war may backfire politically as it can lead to an insurrection on Israel against him or other superpowers faltering as they won't want to enter a losing war, especially because they also need to convince their people to back them. War is very costly, so they want to balance the economic cost with political support.