Shooting unarmed children = behavior of somebody who thinks they have a free-fire zone.
Bombing targets in a fenced military compound that appear to be retrieving supplies from a shed within the compound ≠ behavior of somebody who thinks they have a free-fire zone.
Once again, you seem to demand an impossibly high standard of certainty. Why is it that friendly fire incidents in the battlefield are not uncommon? Is it your notion that the average soldier doesn't care about killing his own soldiers, and that he just sprays bullets at every target he encounters? Or is it rather that there is a level of uncertainty that is always present, a fact of the world we live in, and that demanding near absolute certainty is not realistic nor possible?
I think what's going on is people are expecting Hollywood-level imagery. Look at the actual video the IDF releases--it's obviously taken from very far away, at best you can see roughly how tall someone is--and you aren't even going to do that in realtime.