Attesting to facts requires more than identity. There are billions of nobodies with identities whom I don't trust to attest to anything.

Verifiable events can be attested to (like the availability of testing) with trustworthy data, like from a reliable reporter or the test providers or some reliable surveillance mechanisms. Using a identity as a proxy for accountability, in furtherance of reputation management -- as the social media web largely treats all this -- is an error.

People aren't reliable just because we know they're people, as Facebook-provided comments on third-party sites demonstrate.