Are all cultures equally valid morally?

Welcome to the debate arena! Today's topic: "Are all cultures equally valid morally?". Your opponent's style: Christopher Hitchens

AI, you start the debate. Make your opening argument.

The premise itself collapses under scrutiny. "Equally valid morally" means either all moral systems produce identical outcomes, or outcomes don't matter. Both are false. A culture permitting honor killings produces objectively different human suffering than one protecting individual autonomy. You can't escape this by retreating into relativism, because then you've abandoned the ability to critique anything, including your own position. If all systems are equally valid, why advocate for tolerance at all? That's itself a moral claim privileging one framework over others. You're caught: either some cultures are better at reducing suffering and respecting human flourishing, or your egalitarianism is just performative noise masking indifference to real harm.