So you'd like to see "someone who has the qualifications explain so clearly" the issue?

Because that's what your original reply was taking issue with.

In general, trusting based on the letters behind a person's name is bad.

I am cultivating the habit of weighing the validity of the argument instead of implied trust based on a person's name or degrees.

But you said you wanted to hear from an expert. How do you imagine a non-expert can select an expert without indulging in something that could easily be called credentialism by a cranky internet commenter?

A good explanation not something from someone who claims to be an expert.

There are all sorts of people giving good explanations on almost any topic. Only some of them know what they're talking about. And there are plenty of experts who aren't very good at explaining, as they have spent their time and energy on gaining expertise.

So your heuristic easily leads to believing all sorts of nonsense. Antivaxxers, for example, frequently point to glib people with plausible-sounding explanations whose flaws are not at all obvious to the casual observer.