This is untrue. ICC sometimes issues warrants for crimes that were in the past where it is unlikely the crime will continue.
>tamper with investigation (killing witnesses, etc
While this is something the ICC could issue a warrant for if there was reasonable cause, to date they have not publicly. So far the ICC has not accused Israel of this.
>And you don't know much about the ICC process and could not have observed it if you think warrant is step 1. It's like step 7. If you did not watch the process, you can still learn the ICC procedure from the rules of the court. It's all freely available on their website.
i was oversimplifying a bit, like yes, there is some process around letting complemtary take its course, but the warrant is the first step where the accused can actually do anything about it. my point was its very far away from a guilty verdict