When the 1st hospital attack happened, it led to weeks of discourse: "Palestinians can't shoot straight", death toll is actually much lower, accidentally hit fuel storage, etc. When they first raided a hospital, there was a lot of discourse: MRI machine armoury, tunnels underneath, etc. When they first mowed down people surrounding an aid truck, there was tons of dicsourse: Hamas did it, these were terrorists, etc.
Since then they have attacked almost every hospital using both air and ground forces, have massacred people lining up for aid multiple times, and there has been no discourse and no need for a cover story since it becomes an accepted part of this war.