IDF personnel are in and out of every hospital in Israel all the time. Every other adult in Israel is IDF.

Israel has attacked every hospital in Israel with the blanket claim that some Hamas person was there at some point. Not that there was active fighting at the hospital. Not that Hamas was barricaded inside and firing out of it. Just that someone however loosely related to Hamas might have been near the hospital at some point. By that same argument, virtually every building in Israel would be a legitimate target.