What about privacy?
What this is talking about is sharing your private health history (your "life certificate") with just about anybody who asks. Even attempts at anonymizing data will fail. When past illnesses, medical procedures, and hospitalizations about a person are made available, it's easy to identify the person and from there learn any other sensitive information made available by the life certificate.
And with data being collected by literally millions of health workers, it's hard to guarantee the consistency and accuracy of it. It could be useless, and yet the conclusions drawn from it would be taken as gospel truth.
