No, it’s already happening today. There is an arrest warrant out for Netanyahu. Netanyahu visited Hungary, a party of the Rome Statue, and was not arrested.
In a similar vein, Poland has said Netanyahu would have been welcome to visit the liberation of Auschwitz, without having to worry about out any arrest.
Depending on how Hungary’s actions are resolved, the ICC will lose much of it’s use if member states just ignore the treaty.
Netanyahu isn't "a sitting or former POTUS, their direct subordinates or military personnel", the arrest of which is the event you said "the ICC would fall shortly after". That's what I disagreed with.
In a similar vein, Poland has said Netanyahu would have been welcome to visit the liberation of Auschwitz, without having to worry about out any arrest.
Depending on how Hungary’s actions are resolved, the ICC will lose much of it’s use if member states just ignore the treaty.