> Medical experts and scientists can provide data that helps inform people.
I add: when the data is clear cut. At worst, when data is noisy or little is known, you get (at least what I've seen in Italy) declarations from experts in the news that can be easily contradictory. Worse when some of the experts, because they're human, are a little more attached to their ideas.
In a way, this pandemic brought the scientific debate to light in public, in the sense that ideas are often challenged and adjusted based on discussion, and even harsh contrast. But this is a problem when communicating outside, because lay people usually regard experts as holders of truth, or at least part of it.
See the current debate on serological tests' sensitivity and specificity and the consequences on the results. I can likely understand the issues and the criticisms, but I can't expect lay people (not because any fault of them, of course) to understand them.