> Those responsible for war crimes and crimes against humanity will NOT go to jail

I dislike the injustice, but I've come around to the view that agreements like this are often consequentially appealing. If the end to a conflict leads to one's imprisonment or execution, the incentive might be to keep fighting even with unfavorable odds. I don't know the particulars of this case, but it's possible that a peace agreement could only be reached if it includes this provision, and so it might be worth it.