The universe doesn’t exist in human terms though. Stars don’t care about genocide, or abortion. Black holes don’t care about gender or identity issues. I’m certain the universe does not exist on human terms, and human morality is only an idea that has meaning to other humans.
I don’t believe there is a single valid, unassailable concept that can prop up the idea that objective morality is likely, or even possible.
Would morality exist once the last human dies? Did morality exist before? It’s just a useless question.