Just had a fascinating conversation with my ... friend ...
He had never heard that zinc has to be combined with hydroxychloroquine to be effective (or so the hypothesis goes). So he did not know the studies showing no effect without the zinc were not telling you much.
He was not aware that something like a quarter of doctors would prescribe hydroxychloroquine and zinc based on the situation and the risk assessment. He believed there was zero medical opinion agreeing with Trump.
He had never heard of "off-label" prescribing of meds, and that it is fairly normal. He believed any doctor doing such a thing was violating healthcare norms with "unproven drugs."
He was not aware the frontline healthcare workers (some not all) have been taking hydroxychloroquine (and probably zinc) for months