Based on time under starvation conditions, the mass graves the IDF seems constitutionally incapable of not leaving behind, and counts of missing family members.

Can you share your methodology of calculating this number? You are not basing this on anything but your gut-feeling. Given how most of your comments consist of blindly parroting propaganda instead of even trying to form any in-depth understanding of this topic, that's not surprising. Hell, you once attacked me for trying to bring nuance into this debate, at which point I was done with you for that day, because could there be anything more intellectually bankrupt?

is there any line crossed, any action taken by the IDF that you wouldn’t automatically defend?

Sure thing. If orders to deliberately exterminating Palestinians came to light, that would certainly be it. Those should exist if the goal of the IDF, as frequently claimed by people like you who make up fantasy numbers to then feel outraged about, was genocide. Of course, this clashes with various efforts of the same IDF to prevent Palestinian civilians from being harmed, which is kind of odd, don't you think?

So either they are using e.g. roof knocking and a whole range of other warning measures just for PR-purposes (even though it significantly hurts their military efforts and their PR - Hamas can escape and the moment any building is being roof-knocked, dozens of cameras are immediately on it in order to film it, with lots of people feeling perfectly safe, trusting that this building and only this building will be hit; strange that) or the truth isn't as simple as you are so desperately trying to make it be. You haven't exactly been writing particularly well thought out comments on this topic at any point. Not that this limits your enthusiasm for your self-righteous preaching. Dunning, meet Kruger.

Do you think it is right that Palestinians prisoners should be zip tied long enough that their limbs die and need too be cut off?

No, but good job trying distracting from your fantasy numbers. This might constitute criminal neglect. Those responsible should be punished and measures should be undertaken to prevent this from occurring. While internal review processes are far from perfect at the IDF, they do at least exist and are being applied. Two senior officers responsible for ordering the recent air strikes on aid workers were sacked, for example. The same could happen here as well.