That it actually freakin' works at doing the thing it's trying to do (providing a currency with a guarantee that each account is controlled by one person)
I don't believe they have ever promised that. One person = one account is not at all how the system is designed. It is definitely never mentioned or promised here: https://whitepaper.worldcoin.org/ and it is contrary to the system outlined in that document.
That whitepaper doesn't explicitly say "one person = one account", but it seems to be a really basic feature of the system:
- They clearly don't want accounts that don't belong to a person ("Keep the Bots Out" is an explicit goal).
- They also don't want one person with more than one account (World ID is intended to solve the problem of governance by ensuring that each person gets only one vote).