It's true that the casualties of the Israeli counter-offensive can only conclusively be tied to ~20-30 casualties, but for many casualties it's unknown who is responsible, and there is (inconclusive) evidence Israeli fire resulted in the burning of 77 vehicles, many of which were returning to Gaza with captives (or their bodies)
It seems unlikely to me there were fewer than 80 civilian casualties (out of 815) attributable to friendly fire, and I wouldn't be surprised to learn that number is over 200.
Remember that 47 minutes of video Israel was screening for reporters but did not release? They've gotten permission from some of the families and have released part of it. You definitely see people being killed on camera.
And the really important part isn't the video itself, but that it's stuff that Hams people chose to post on social media. Something to be cheered, not a horror.
And, no, they didn't get permission from any of the other victims families to publish on that site.
So, the IDF literally has no direct confirmation of rape.
I learned a very uncomfortable—though valuable—lesson about humans that day.