The IDF has some accountability for criminal behavior. If you search you will find plenty of examples were soldiers were held criminally responsible for their actions. It's true that the default (and maybe the correct default) is to shield soldiers from actions taken during the course of war. This is not unique to the IDF, it's true for all western armies. Try and find me if the US pilot that bombed a hospital in Kandahar, or the US security contractors that mowed down people in the Baghdad market, were ever held criminally responsible.
And just to be clear, my position is that if there was a criminal act here the IDF should absolutely prosecute. To my understanding this is still not settled for this case, i.e. there has not been a decision to not prosecute. But we shouldn't kid ourselves that this is somehow different.
Indeed, and a fig leaf does technically provide some amount of coverage.
For an example of how big this accountability is, when 3 of the hostages escaped they were killed by the IDF and that's ok because there was no malice in the act of shooting bare chested unarmed civilians waving a white flag as they approach.
Was there ever a serious prosecution and serious punishments by IDF personnel? They always make PR circus how they investigate another war crime, but nothing ever happens from what I could find.
You are correct about others but it doesn't change anything here - war crimes and atrocities are the worst of human behavior. Whataboutism shouldn't diminish outrage, and every such person should be extremely severely punished and ostracized by rest of humankind till end of their days, no exception, doesn't matter what passport they hold. Basic morality and all that.
And just to be clear, my position is that if there was a criminal act here the IDF should absolutely prosecute. To my understanding this is still not settled for this case, i.e. there has not been a decision to not prosecute. But we shouldn't kid ourselves that this is somehow different.