They’ve got a lot of morale issues right now due to a lack of new troops to be deployed. Orthodox don’t join the military and they’ve practically rotated through all the men that they can in Gaza over the last three years, and a lot of them are tired of being away from home for so long without reprieve. To order the men that have spent three years away from home to help attack Iran would cause massive issues with recruitment and retaining manpower, watching the government continue to participate in these ridiculously stretched out wars.