My neighbor, who struggled to finish high school, over 50 years ago,
has plenty of unsolicited health advice for me (and everyone else).
I tend, however, to give much greater weight to the views of my personal physician,
who has graduated from prestigious medical institutions in the last generation,
and continues to operate a successful GP practice.
Now, that is no guarantee that any particular piece of advice my doctor gives me
is infallible, optimal, or even a good idea.
But the claim that my neighbor's views are equally likely to be good medical advice
--merely because she has opinions and is breathing--just isn't sensible.
"Qualified" can be useful, but as a relative term...it doesn't mean infallible.