"Awful" because you don't think parties should honor contracts or treaties? It is easily fixed if the fate of western conservation is truly at risk - Congress and the Pres can write whatever new rules they will. That's how our constitutional government is designed to work.This was an awful ruling by "conservative" SCOTUS Gorsuch. The other SCOTUS justices you'd expect to rule this way.
As our Western Civilization falls further into Clown World, we will continue to see more of these issues come up & will continue to have to bear these burdens. It is unfortunate for Conservation in Western Civilization at large.