I don't understand what the fraud is. Did they substitute themselves into the identity of their dead relatives? I did read of such a case for the world's oldest

I don't understand what the fraud is. Did they substitute themselves into the identity of their dead relatives? I did read of such a case for the world's oldest women https://metro.co.uk/2019/01/03/worlds-oldest-woman-122-complete-fraud-took-mothers-identity-8305182/amp/ https://metro.co.uk/2019/01/03/worlds-oldest-woman-122-compl...