I agree that's weird, but that article is going with Hamas numbers which are most likely inflated and still proves the above point. So why not acknowledge that?
I don't trust the numbers Israel is providing because anyone can see they are hiding something.
Let's say after a bomb drops or firefight they survey the area. 100 are dead. They label 30 of them as terrorist. They leaves 70 as civilians. This isn't rocket science.
What if the numbers they have are 14k terrorist and 11k civilians. Would you believe that?