Whether the author is a health official who has authority to do something is irrelevant to the substance of their opinion.
Discussing the experience and expertise that someone has in a subject when they’re making policy prescriptions is absolutely in bounds. While it sounds high minded to say that we should argue everything on the merits alone, the brutal reality is that this results in the experts (who are few) being shouted out by the amateurs (who are many).
Expertise matters; this isn’t debate club. If you’re going to start making extraordinary claims in a field you just started studying last month, you must provide extraordinary proof. Not having expertise in an area doesn’t make you a bad person, it just means that maybe we don’t have to listen to your take.
Perhaps by gaining a degree and employment in the area of health and medicine?