There's presumably a difference between commentating on something outside your field of expertise when you are in essentially the same position as anybody else, and when you are officially connected. I'm not sure if theprof is officially subject to confidentiality clauses, but I would be amazed if he were able to share everything he knows/does, and likewise I'd be amazed if commenting on the policy, even from a position of relative anonymity, would be ethical in the circumstances.
There's no-one on this site, anyway, who knows more about Covid, and the research into it, than theprof. That's valuable insight. It is perhaps a shame that it's "limited" to matters scientific, but it would be a shame indeed if we lost that access to such expertise, or cut ourselves off from it, by demanding more than he's prepared to give. The politics we can debate amongst ourselves, anyway.