The parent comment is discussing a different hospital, Al-Ahli on Oct 17th, vs Al-Shifa on Nov 10th which is the article you're linking to from NYT.
Civilians being injured in a hospital is clearly a tragedy. That's why hospitals normally have protected status during a war and targeting them would be a war crime. However, hospitals (and other protected sites like schools) lose their protected status when they're used for military purposes[1]. That doesn't make the situation less tragic for the civilians. But there's a difference between striking a random hospital because you want to kill civilians and killing civilians while striking hostile forces in the same vicinity that may be actively shooting at you.
Civilians being injured in a hospital is clearly a tragedy. That's why hospitals normally have protected status during a war and targeting them would be a war crime. However, hospitals (and other protected sites like schools) lose their protected status when they're used for military purposes[1]. That doesn't make the situation less tragic for the civilians. But there's a difference between striking a random hospital because you want to kill civilians and killing civilians while striking hostile forces in the same vicinity that may be actively shooting at you.
[1] https://www.icrc.org/en/document/protection-hospitals-during...