The argument for it being Israel:

• Israel has complete air superiority
• Israel is conducting a bombing campaign against Gaza
• Israel has threatened to attack hospitals
• Israel has previously bombed hospitals
• Israel has previously bombed this exact hospital
• The audio and visual characteristics of the bomb and the damage caused (captured by multiple, independent observers) match with a JDAM guided bomb, which Israel has already used
• Israeli sources first claimed the hospital was a Hamas base or had Hamas tunnels or arms caches, before rapidly rolling back their position to "we didn't do it"
• It is clearly in Israel's interest to kill Palestinians and destroy Palestinian infrastructure, especially medical services and supplies, because they are conducting a genocide

The argument for it being Hamas:

• Israel says it was

Reddit, or rather , is controlled by the US security state, so r/combatfootage - which banned all combat footage from Palestinian viewpoints - is not a reliable source. The idea that a 'rocket piece' could accidentally fall on a hospital and kill 500 people (a number reported by a first-hand MSF witness) is laughably absurd. If a Hamas rocket could cause this kind of damage, Tel Aviv would look like the surface of the fucking moon. It was OBVIOUSLY another genocidal act by the entity continuously and overtly engaged in genocidal acts. To think otherwise requires you to want to fall for their propaganda. No one in full possession of their faculties looking at the facts dispassionately could possibly conclude it was anything else.