That is the point. Objectively speaking without people, there are no morals because reality doesn't care. You could make a case for morals being evolutionary traits based on what is of greatest benefit but again that goes into it being the people those traits evolved or became entrenched in being the ones making them real. A view of morals are a constant of reality isn't wrong, there are far worse things have as your core but its good to not forget that is the people that keep that constant what it is.
Without people, human morals would not exist. But humans aren't the only beings with morals.
A debate of this sort tends to come down to whether or not one believes in God.