While I appreciate the sentiment generally, I think this opinion, at least expressed as it is here, is a little exaggerated. In this case the author is a doctor, which probably makes him more qualified than your average Fox News commentator. He's a surgeon, though, so he probably isn't the most qualified person so, sure, grain of salt etc. What if this had been an opinion piece from an esteemed epidemiologist? Should we still disregard what they say?

Generally, I think the best strategy is to be open to what people might have to say if one is also diligent about checking sources.

EDIT: Missing words.