Notice the gradual shift from an international order based on international law to the current "rules-based" international order that has happened during the last 2 decades? The ICJ is an arbiter of international law while the rules-based order is based on arbitrary rules made by the US and mostly NATO allies not necessarily related to international law. This shift was designed for situations like this where adherence to these arbitrary rules can be used to override/ignore international law. So when the highest court in the world when it comes to international law rules that the case brought by SA has clear merit, the US can punish SA for bringing the case in the first place and pretend that's by the rules.