All governments will be listening to their CMOs for sure. There is also a committee of experts ( or called something like that) which includes the most highly credentialed infectious diseases experts in the country and the CMOs.Yeh it's not an enviable task for governments. They have done well on the immediate health front. But the biggest challenge will be in reducing restrictions.
And its where party preference will influence the opinion of the general punter. eg scomo bad for wanting kids back in school, Andrews good for keeping them home. Despite both being presented with the same medical advice. How much influence does the CMO have over the actual decision making?
Eventually the brakes will have to be let off, that will be a shitstorm of a process.
But ultimately the pollies will make the calls and of course as you point out we will all see those decisions to some extent through the lenses of our own biases and opinions.
I am lucky because I didn’t rate either SCOMO or Andrews before this but I have to say that they both have done a pretty decent job, especially Andrews who I think always seems more certain and consistent than SCOMO. That may be just me.