'Blind' is a much larger category than 'eyeless', and I think you're making the implicit assumption that the government's current identity verification methods work much better than they really do. Just look at the HN post yesterday about the woman whose identity was stolen and used to import 'counterfeit' goods. Worldcoin's system may not be perfect, but having it as an option might have helped in a case like that.
'Blind' is a much larger category than 'eyeless', and I think you're making the implicit assumption that the government's current identity verification methods work much better than they really do. Just look at the HN post yesterday about the woman whose identity was stolen and used to import 'counterfeit' goods. Worldcoin's system may not be perfect, but having it as an option might have helped in a case like that.