What you are saying now is very different from the calculus required to determine if humanities extinction is a catastrophe. It is one by our point of view, an

What you are saying now is very different from the calculus required to determine if humanities extinction is a catastrophe. It is one by our point of view, and most humans argue that (a) our point of view is the only one that matters since in the grand aspect we haven’t found any other intelligent point of view, though we theorize they may exist and (b) judging the pain of death as catastrophe is a personal choice, even on Earth we allow people to call the death of their loved ones catastrophic even if other humans continue to go on living blithely unaware of their pain.