The proof you provide is very shallow, and with no real relevance or weight as an argument point - when it's known that the US and Israel have veto powers, as an example, that most international organizations currently are theatre without teeth - and so that's essentially why it's "fairly unprecedented."

Now Netanyahu has done enough blatantly, what's argued by some to be the most video/photographed-recorded genocide in history, the hierarchy and people resource hierarchy of the ICC hasn't fallen to Israeli political pressure (or whatever other tactics Mossad is known to use to try to get their way).

Once again, your final point is more neutral - where you could only really honestly say that if in a vacuum, if you're not looking behind the scenes with how much pressure Israel has put publicly and privately on members of the ICC to not file nor then issue charges, etc.