this is a baseless conspiracy. There is an entire report going over the operational failures that allowed oct 7th to happen and it wasnt the idf intentionally standing aside to let it happen. Also friend fire is predicted to be in the single digits and I dont think any has actually been confirmed.
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.
They shot a building with a tank where Hamas was holding hostages, maybe there wasn't a good solution but blowing up their own citizens without trying is pretty bad. And we don't really know the extent of what happened that day as no independent people were allowed and Zaka cleaned it up quickly. Zaka is an ultra orthodox right wing volunteer organisation and its probably who started the false burned babies story. And then we have the Hannibal directive so its not like Israel is not accustomed to killing their own.